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Ecology, management and conservation in natural and modified habitats
RESEARCH ARTICLE

Heterospecific social attraction in migrant birds: habitat niche overlap between two threatened shrikes

Gianpasquale Chiatante https://orcid.org/0000-0002-4570-9350
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Department of Earth and Environmental Sciences, University of Pavia, Via Ferrata, 9 – 27100 Pavia, Italy. Email: laniusminor84@gmail.com

Wildlife Research 46(1) 25-36 https://doi.org/10.1071/WR18031
Submitted: 25 February 2018  Accepted: 25 September 2018   Published: 20 December 2018

Abstract

Context: Effective biodiversity conservation requires information about a species’ ecology and its relationship with the geographical context. To achieve this efficiently, species distribution models can be developed, also taking into account species associations.

Aims: I aimed to illustrate the habitat requirements of two threatened passerines of semi-open landscapes, i.e. the lesser grey shrike, Lanius minor, and the woodchat shrike, Lanius senator, in southern Italy. Further, I assessed whether there is heterospecific social attraction between them, by assessing how their habitat niches overlap.

Methods: Data were collected by territory mapping during the 2009–13 breeding seasons. The habitat requirements of the species were investigated with the help of ecological niche factor analysis (ENFA). In addition, the areas of sympatry between the two species were defined by indicator kriging and the habitat niche overlap was analysed using the generalised linear model (GLM).

Key results: The results showed that these two species inhabit open areas, with scattered vegetation such as shrubs and trees, while avoiding intensively cultivated permanent crops, such as vineyards and olive groves. Moreover, a little difference was observed in the percentage cover of shrublands, which were higher in the woodchat shrike territories than in the lesser grey ones. The strong overlap in their habitat niches suggests heterospecific social attraction between them, especially because of the species rarity.

Conclusions: The lesser grey and the woodchat shrike were found to occur in very similar environments, by evidencing the overlap of their macrohabitat niches. This suggests the presence of heterospecific social attraction, corroborating the understudied hypothesis that this phenomenon is valid for migrant birds as well. The lesser grey shrike, in particular, may use occurrences of the woodchat shrike as a cue for assessing habitat quality and, thus, to establish its territory.

Implications: Considering the high habitat niche overlap, habitat changes occurring in the landscape might affect them equally. Furthermore, the use of heterospecific social information in habitat selection potentially has many important conservation implications. Indeed, by reproducing the appropriate information, birds could be attracted to specific sites known to be high-quality habitat.

Additional keywords: ENFA, indicator kriging, Lanius, Mediterranean, steppic bird, sympatry.


References

Acevedo, P., Alzaga, V., Cassinello, J., and Gortázar, C. (2007a). Habitat suitability modelling reveals a strong niche overlap between two poorly known species, the broom hare and the Pyrenean grey partridge, in the north of Spain. Acta Oecologica 31, 174–184.
Habitat suitability modelling reveals a strong niche overlap between two poorly known species, the broom hare and the Pyrenean grey partridge, in the north of Spain.Crossref | GoogleScholarGoogle Scholar |

Acevedo, P., Cassinello, J., Hortal, J., and Gortázar, C. (2007b). Invasive exotic aoudad (Ammotragus lervia) as a major threat to native Iberian ibex (Capra pyrenaica): a habitat suitability model approach: niche relationships between Iberian ibex and aoudad. Diversity & Distributions 13, 587–597.
Invasive exotic aoudad (Ammotragus lervia) as a major threat to native Iberian ibex (Capra pyrenaica): a habitat suitability model approach: niche relationships between Iberian ibex and aoudad.Crossref | GoogleScholarGoogle Scholar |

Acker, P., Besnard, A., Monnat, J.-Y., and Cam, E. (2017). Breeding habitat selection across spatial scales: is grass always greener on the other side? Ecology 98, 2684–2697.
Breeding habitat selection across spatial scales: is grass always greener on the other side?Crossref | GoogleScholarGoogle Scholar |

Anderson, D. R., and Burnham, K. P. (2002). Avoiding pitfalls when using information-theoretic methods. The Journal of Wildlife Management 66, 912–918.
Avoiding pitfalls when using information-theoretic methods.Crossref | GoogleScholarGoogle Scholar |

Anderson, D. R., Burnham, K. P., and Thompson, W. L. (2000). Null hypothesis testing: problems, prevalence, and an alternative. The Journal of Wildlife Management 64, 912–923.
Null hypothesis testing: problems, prevalence, and an alternative.Crossref | GoogleScholarGoogle Scholar |

Anderson, D. R., Link, W. A., Johnson, D. H., and Burnham, K. P. (2001). Suggestions for presenting the results of data analyses. The Journal of Wildlife Management 65, 373–378.
Suggestions for presenting the results of data analyses.Crossref | GoogleScholarGoogle Scholar |

Araújo, M. B., and Guisan, A. (2006). Five (or so) challenges for species distribution modelling. Journal of Biogeography 33, 1677–1688.
Five (or so) challenges for species distribution modelling.Crossref | GoogleScholarGoogle Scholar |

Austin, M. P., Nicholls, A. O., and Margules, C. R. (1990). Measurement of the realized qualitative niche: environmental niches of five Eucalyptus species. Ecological Monographs 60, 161–177.
Measurement of the realized qualitative niche: environmental niches of five Eucalyptus species.Crossref | GoogleScholarGoogle Scholar |

Barry, S., and Elith, J. (2006). Error and uncertainty in habitat models. Journal of Applied Ecology 43, 413–423.
Error and uncertainty in habitat models.Crossref | GoogleScholarGoogle Scholar |

Bártol, I., and Lovászi, P. (2000). Habitat selection and reproductive success of the lesser grey shrike (Lanius minor) in the Kiskunság area. Ornis Hungarica 10, 87–91.

Bartoń, K. (2010). ‘Package MuMIn: Multi-model Inference.’ Available at www.cran.r-project.org. [Verified 2 February 2018]

Bayliss, J. L., Simonite, V., and Thompson, S. (2005). The use of probabilistic habitat suitability models for biodiversity action planning. Agriculture, Ecosystems & Environment 108, 228–250.
The use of probabilistic habitat suitability models for biodiversity action planning.Crossref | GoogleScholarGoogle Scholar |

Bibby, C. J., Burgess, N. D., Hill, D. A., and Mustoe, S. H. (2000). ‘Bird Census Techniques.’ 2nd edn. (Academic Press: London.)

BirdLife International (2004). ‘Birds in Europe. Population Estimates, Trends and Conservation Status.’ (BirdLife International: Cambridge, UK.)

BirdLife International (2016a). ‘Lanius minor: the IUCN Red List of Threatened Species 2016: e.T22705038A87339356.’ Available at http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22705038A87339356.en. [Verified 28 January 2018]

BirdLife International (2016b). ‘Lanius senator: the IUCN Red List of Threatened Species 2017: e.T22705095A118777394.’ Available at http://dx.doi.org/10.2305/IUCN.UK.2017-3.RLTS.T22705095A118777394.en. [Verified 28 January 2018]

BirdLife International (2017). ‘European Birds of Conservation Concern: Populations, Trends and National Responsibilities.’ (BirdLife International: Cambridge, UK.)

Bivand, R., Pebesma, E. J., and Gómez-Rubio, V. (2008). ‘Applied Spatial Data Analysis with R,’ (Springer: New York.)

Bowne, D., and Bowers, M. (2004). Interpatch movements in spatially structured populations: a literature review. Landscape Ecology 19, 1–20.
Interpatch movements in spatially structured populations: a literature review.Crossref | GoogleScholarGoogle Scholar |

Boyce, M. S., Vernier, P. R., Nielsen, S. E., and Schmiegelow, F. K. (2002). Evaluating resource selection functions. Ecological Modelling 157, 281–300.
Evaluating resource selection functions.Crossref | GoogleScholarGoogle Scholar |

Brahimia, Z., Dziri, H., Benyacoub, S., Chabi, Y., and Bańbura, J. (2003). Breeding ecology of Algerian woodchat shrikes Lanius senator: low breeding success. Folia Zoologica 52, 309–316.

Brambilla, M., Casale, F., Bergero, V., Crovetto, G. M., Falco, R., Negri, I., Siccardi, P., and Bogliani, G. (2009). GIS-models work well, but are not enough: habitat preferences of Lanius collurio at multiple levels and conservation implications. Biological Conservation 142, 2033–2042.
GIS-models work well, but are not enough: habitat preferences of Lanius collurio at multiple levels and conservation implications.Crossref | GoogleScholarGoogle Scholar |

Burfield, I. J. (2005). The conservation status of steppic birds in Europe. In ‘Ecology and Conservation of Steppe-land Birds’. (Eds G. Bota, M. B. Morales, S. Mañosa and J. Camprodon.) pp. 119–139. (Lynx Edicions and Centre Tecnològic Forestal de Catalunya: Barcelona, Spain.)

Burnham, K. P., and Anderson, D. R. (2002). ‘Model Selection and Multimodel Inference: a Practical Information-theoretic Approach.’ 2nd edn. (Springer: New York.)

Cassinello, J., Acevedo, P., and Hortal, J. (2006). Prospects for population expansion of the exotic aoudad (Ammotragus lervia; Bovidae) in the Iberian Peninsula: clues from habitat suitability modelling. Diversity & Distributions 12, 666–678.
Prospects for population expansion of the exotic aoudad (Ammotragus lervia; Bovidae) in the Iberian Peninsula: clues from habitat suitability modelling.Crossref | GoogleScholarGoogle Scholar |

Chalfoun, A. D., and Martin, T. E. (2010). Facultative nest patch shifts in response to nest predation risk in the brewer’s sparrow: a ‘win-stay, lose-switch’ strategy? Oecologia 163, 885–892.
Facultative nest patch shifts in response to nest predation risk in the brewer’s sparrow: a ‘win-stay, lose-switch’ strategy?Crossref | GoogleScholarGoogle Scholar |

Chiatante, G., and Meriggi, A. (2016). The importance of rotational crops for biodiversity conservation in Mediterranean areas. PLoS One 11, e0149323.
The importance of rotational crops for biodiversity conservation in Mediterranean areas.Crossref | GoogleScholarGoogle Scholar |

Chiatante, G., Brambilla, M., and Bogliani, G. (2014a). Spatially explicit conservation issues for threatened bird species in Mediterranean farmland landscapes. Journal for Nature Conservation 22, 103–112.
Spatially explicit conservation issues for threatened bird species in Mediterranean farmland landscapes.Crossref | GoogleScholarGoogle Scholar |

Chiatante, G., Chiatante, P., and Todisco, S. (2014b). La migrazione delle averle in Puglia. Alula 16, 82–83.

Cianfrani, C., Le Lay, G., Hirzel, A. H., and Loy, A. (2010). Do habitat suitability models reliably predict the recovery areas of threatened species? Journal of Applied Ecology 47, 421–430.
Do habitat suitability models reliably predict the recovery areas of threatened species?Crossref | GoogleScholarGoogle Scholar |

Cody, M. L. (1985). ‘Habitat Selection in Birds.’ (Academic Press: Orlando, FL.)

Comte, L., and Grenouillet, G. (2013). Species distribution modelling and imperfect detection: comparing occupancy versus consensus methods. Diversity & Distributions 19, 996–1007.
Species distribution modelling and imperfect detection: comparing occupancy versus consensus methods.Crossref | GoogleScholarGoogle Scholar |

Cramp, S., and Perrins, C. M. (1993). ‘Handbook of the Birds of Europe the Middle East and North Africa. Vol. VII. Flycatchers to Shrikes.’ (Oxford University Press: New York.)

Crawley, M. J. (1993). ‘GLIM for Ecologists’. (Blackwell Scientific Publications: Oxford, UK.)

Cressie, N. A. C. (1993). ‘Statistics for Spatial Data.’ Rev. edn. (Wiley: New York.)

De Luigi, V., Furlan, L., Palmieri, S., Vettorazzo, M., Zanini, G., Edwards, C. R., and Burgio, G. (2011). Results of WCR monitoring plans and evaluation of an eradication programme using GIS and indicator kriging: diabrotica monitoring using geostatistics. Journal of Applied Entomology 135, 38–46.
Results of WCR monitoring plans and evaluation of an eradication programme using GIS and indicator kriging: diabrotica monitoring using geostatistics.Crossref | GoogleScholarGoogle Scholar |

Elith, J., and Leathwick, J. R. (2009). Species distribution models: ecological explanation and prediction across space and time. Annual Review of Ecology Evolution and Systematics 40, 677–697.
Species distribution models: ecological explanation and prediction across space and time.Crossref | GoogleScholarGoogle Scholar |

Fawcett, T. (2006). An introduction to ROC analysis. Pattern Recognition Letters 27, 861–874.
An introduction to ROC analysis.Crossref | GoogleScholarGoogle Scholar |

Fielding, A. H., and Bell, J. F. (1997). A review of methods for the assessment of prediction errors in conservation presence/absence models. Environmental Conservation 24, 38–49.
A review of methods for the assessment of prediction errors in conservation presence/absence models.Crossref | GoogleScholarGoogle Scholar |

Fletcher, R. J. (2007). Species interactions and population density mediate the use of social cues for habitat selection. Journal of Animal Ecology 76, 598–606.
Species interactions and population density mediate the use of social cues for habitat selection.Crossref | GoogleScholarGoogle Scholar |

Forsman, J. T., Mönkkönen, M., Helle, P., and Inkeröinen, J. (1998). Heterospecific attraction and food resources in migrants’ breeding patch selection in northern boreal forest. Oecologia 115, 278–286.
Heterospecific attraction and food resources in migrants’ breeding patch selection in northern boreal forest.Crossref | GoogleScholarGoogle Scholar |

Forsman, J. T., Seppanen, J.-T., and Mönkkönen, M. (2002). Positive fitness consequences of interspecific interaction with a potential competitor. Proceedings. Biological Sciences 269, 1619–1623.
Positive fitness consequences of interspecific interaction with a potential competitor.Crossref | GoogleScholarGoogle Scholar |

Forsman, J. T., Thomson, R. L., and Seppanen, J.-T. (2007). Mechanisms and fitness effects of interspecific information use between migrant and resident birds. Behavioral Ecology 18, 888–894.
Mechanisms and fitness effects of interspecific information use between migrant and resident birds.Crossref | GoogleScholarGoogle Scholar |

Fox, J., and Monette, G. (1992). Generalized collinearity diagnostics. Journal of the American Statistical Association 87, 178–183.
Generalized collinearity diagnostics.Crossref | GoogleScholarGoogle Scholar |

Fox, J., and Weisberg, S. (2011). ‘Package car: an R Companion to Applied Regression.’ Available at www.cran.r-project.org. [Verified 2 February 2018]

Fulgione, D., Maselli, V., Pavarese, G., Rippa, D., and Rastogi, R. K. (2009). Landscape fragmentation and habitat suitability in endangered Italian hare (Lepus corsicanus) and European hare (Lepus europaeus) populations. European Journal of Wildlife Research 55, 385–396.
Landscape fragmentation and habitat suitability in endangered Italian hare (Lepus corsicanus) and European hare (Lepus europaeus) populations.Crossref | GoogleScholarGoogle Scholar |

Giralt, D., Brotons, L., Valera, F., and Krištín, A. (2008). The role of natural habitats in agricultural systems for bird conservation: the case of the threatened lesser grey shrike. Biodiversity and Conservation 17, 1997–2012.
The role of natural habitats in agricultural systems for bird conservation: the case of the threatened lesser grey shrike.Crossref | GoogleScholarGoogle Scholar |

Goławski, A., and Mitrus, C. (2014). Nest site characteristics and breeding success of the red-backed shrike (Lanius collurio) in agricultural landscape in eastern Poland: advantage of nesting close to buildings. Ecoscience 21, 168–173.
Nest site characteristics and breeding success of the red-backed shrike (Lanius collurio) in agricultural landscape in eastern Poland: advantage of nesting close to buildings.Crossref | GoogleScholarGoogle Scholar |

Guerrieri, G., and Castaldi, A. (1996). Adattabilità del genere Lanius agli ecosistemi agricoli ed antropizzati del Lazio. In ‘L’avifauna Degli Ecosistemi di Origine Antropica: Zone Umide Artificiali, Coltivi, Aree Urbane’. pp. 99–102. (Electa: Naples, Italy.)

Guerrieri, G., and Castaldi, A. (1999). Status e distribuzione del genere Lanius nel Lazio (Italia centrale). Rivista italiana di Ornitologia 69, 63–74.

Guerrieri, G., and Castaldi, A. (2000). Selezione di habitat e riproduzione dell’averla capirossa, Lanius senator, nel Lazio, Italia centrale. Avocetta 24, 85–93.

Guisan, A., and Zimmermann, N. E. (2000). Predictive habitat distribution models in ecology. Ecological Modelling 135, 147–186.
Predictive habitat distribution models in ecology.Crossref | GoogleScholarGoogle Scholar |

Guisan, A., Edwards, T. C., and Hastie, T. (2002). Generalized linear and generalized additive models in studies of species distributions: setting the scene. Ecological Modelling 157, 89–100.
Generalized linear and generalized additive models in studies of species distributions: setting the scene.Crossref | GoogleScholarGoogle Scholar |

Hakkarainen, H., Mykrä, S., Kurki, S., Tornberg, R., and Jungell, S. (2004). Competitive interactions among raptors in boreal forests. Oecologia 141, 420–424.
Competitive interactions among raptors in boreal forests.Crossref | GoogleScholarGoogle Scholar |

Harris, T., and Franklin, K. (2000). ‘Shrikes & Bush-shrikes: Including Wood-shrikes, Helmet-shrikes, Flycatcher-shrikes, Philentomas, Batises and Wattle-eyes.’ (Christopher Helm: London.) Available at http://site.ebrary.com/id/10486636. [Accessed 6 July 2017]

Hengl, T., Sierdsema, H., Radović, A., and Dilo, A. (2009). Spatial prediction of species’ distributions from occurrence-only records: combining point pattern analysis, ENFA and regression-kriging. Ecological Modelling 220, 3499–3511.
Spatial prediction of species’ distributions from occurrence-only records: combining point pattern analysis, ENFA and regression-kriging.Crossref | GoogleScholarGoogle Scholar |

Hernández, A. (1997). Woodchat Shrike. In ‘The EBCC Atlas of European Breeding Birds: Their Distribution and Abundance’. (Eds W. J. M. Hagemeijer and M. J. Blair.) pp. 666–667. (T & A D Poyser: London.)

Hirzel, A. H., and Arlettaz, R. (2003). Modeling habitat suitability for complex species distributions by environmental-distance geometric mean. Environmental Management 32, 614–623.
Modeling habitat suitability for complex species distributions by environmental-distance geometric mean.Crossref | GoogleScholarGoogle Scholar |

Hirzel, A. H., and Le Lay, G. (2008). Habitat suitability modelling and niche theory. Journal of Applied Ecology 45, 1372–1381.
Habitat suitability modelling and niche theory.Crossref | GoogleScholarGoogle Scholar |

Hirzel, A. H., Hausser, J., Chessel, D., and Perrin, N. (2002). Ecological niche factor analysis: how to compute habitat-suitability maps without absence data? Ecology 83, 2027–2036.
Ecological niche factor analysis: how to compute habitat-suitability maps without absence data?Crossref | GoogleScholarGoogle Scholar |

Hirzel, A. H., Le Lay, G., Helfer, V., Randin, C., and Guisan, A. (2006). Evaluating the ability of habitat suitability models to predict species presences. Ecological Modelling 199, 142–152.
Evaluating the ability of habitat suitability models to predict species presences.Crossref | GoogleScholarGoogle Scholar |

Holmes, R. T., Marra, P. P., and Sherry, T. W. (1996). Habitat-specific demography of breeding black-throated blue warblers (Dendroica caerulescens). Journal of Animal Ecology 65, 183–195.
Habitat-specific demography of breeding black-throated blue warblers (Dendroica caerulescens).Crossref | GoogleScholarGoogle Scholar |

Hromada, M., Antczak, M., Valone, T. J., and Tryjanowski, P. (2008). Settling decisions and heterospecific social information use in shrikes. PLoS One 3, e3930.
Settling decisions and heterospecific social information use in shrikes.Crossref | GoogleScholarGoogle Scholar |

Isaaks, E. H., and Srivastava, R. M. (1989). ‘An Introduction to Applied Geostatistics.’ (Oxford University Press: New York.)

Isenmann, P., and Debout, G. (2000). Vineyards harbour a relict population of lesser grey shrike (Lanius minor) in Mediterranean France. Journal für Ornithologie 141, 435–440.
Vineyards harbour a relict population of lesser grey shrike (Lanius minor) in Mediterranean France.Crossref | GoogleScholarGoogle Scholar |

Jackson, D. A. (1993). Stopping rules in principal components analysis: a comparison of heuristical and statistical approaches. Ecology 74, 2204–2214.
Stopping rules in principal components analysis: a comparison of heuristical and statistical approaches.Crossref | GoogleScholarGoogle Scholar |

Journel, A. J. (1983). Nonparametric estimation of spatial distributions. Mathematical Geology 15, 445–468.
Nonparametric estimation of spatial distributions.Crossref | GoogleScholarGoogle Scholar |

Karlsson, S. (2004). Season-dependent diet composition and habitat use of red-backed shrikes Lanius collurio in SW Finland. Ornis Fennica 81, 97–108.

Kelly, J. K., Chiavacci, S. J., Benson, T. J., and Ward, M. P. (2018). Who is in the neighborhood? Conspecific and heterospecific responses to perceived density for breeding habitat selection. Ethology 124, 269–278.
Who is in the neighborhood? Conspecific and heterospecific responses to perceived density for breeding habitat selection.Crossref | GoogleScholarGoogle Scholar |

Kéry, M. (2011). Towards the modelling of true species distributions. Journal of Biogeography 38, 617–618.
Towards the modelling of true species distributions.Crossref | GoogleScholarGoogle Scholar |

Kivelä, S. M., Seppänen, J.-T., Ovaskainen, O., Doligez, B., Gustafsson, L., Mönkkönen, M., and Forsman, J. T. (2014). The past and the present in decision-making: the use of conspecific and heterospecific cues in nest site selection. Ecology 95, 3428–3439.
The past and the present in decision-making: the use of conspecific and heterospecific cues in nest site selection.Crossref | GoogleScholarGoogle Scholar |

Krištín, A., and Lefranc, N. (1997). Lesser grey shrike. In ‘The EBCC Atlas of European Breeding Birds: their Distribution and Abundance’. (Eds W. J. M. Hagemeijer and M. J. Blair.) pp. 662–663. (T & A D Poyser: London.)

Lefranc, N. (1995). Decline and current status of the lesser grey shrike (Lanius minor) in western Europe. In ‘Shrikes (Lanidae) of the World: Biology and Conservation. Proceedings of the 1st International Shrikes Symposium’. (Eds R. Yosef and F. E. Lohrer.) pp. 167–171. (Western Foundation of Vertebrate Zoology: Lake Placid, NY.)

Lefranc, N., and Worfolk, T. (1997). ‘Shrikes. A guide to the Shrikes of the World.’ (Pica Press: Mountfield, East Sussex, UK.)

Legendre, P., and Legendre, L. (1998). ‘Numerical Ecology.’ 2nd edn. (Elsevier: Amsterdam.)

Manly, B. F. J., McDonald, L. L., Thomas, D. L., Mcdonald, T. L., and Erickson, W. P. (2002). ‘Resource Selection by Animals: Statistical Design and Analysis for Field Studies.’ 2nd edn. (Kluwer Academic Publishers: Dordrecht, Netherlands.)

Marinoni, O. (2003). Improving geological models using a combined ordinary-indicator kriging approach. Engineering Geology 69, 37–45.
Improving geological models using a combined ordinary-indicator kriging approach.Crossref | GoogleScholarGoogle Scholar |

Mastronardi, D., Di Sarra, G., and Ricchi, I. (1996). La distribuzione dei Lanidi in Campania in relazione all’antropizzazione del territorio. In ‘L’avifauna Degli Ecosistemi di Origine Antropica: Zone Umide Artificiali, Coltivi, Aree Urbane’. (Ed. ASOIM.) pp. 83–85. (Electa: Naples, Italy.)

Moga, C. I., Hartel, T., Öllerer, K., and Szapanyos, Á. (2010). Habitat use by the endangered lesser grey shrike Lanius minor in central Romania. Belgian Journal of Zoology 140, 223–226.

Mönkkönen, M., and Forsman, J. T. (2002). Heterospecific attraction among forest birds: a review. Ornithological Science 1, 41–51.
Heterospecific attraction among forest birds: a review.Crossref | GoogleScholarGoogle Scholar |

Mönkkönen, M., Pekka, H., and Soppela, K. (1990). Numerical and behavioural responses of migrant passerines to experimental manipulation of resident tits (Parus spp.): heterospecific attraction in northern breeding bird communities? Oecologia 85, 218–225.
Numerical and behavioural responses of migrant passerines to experimental manipulation of resident tits (Parus spp.): heterospecific attraction in northern breeding bird communities?Crossref | GoogleScholarGoogle Scholar |

Mönkkönen, M., Forsman, J. T., and Helle, P. (1996). Mixed-species foraging aggregations and heterospecific attraction in boreal bird communities. Oikos 77, 127–136.
Mixed-species foraging aggregations and heterospecific attraction in boreal bird communities.Crossref | GoogleScholarGoogle Scholar |

Mönkkönen, M., Helle, P., Niemi, G. J., and Montgomery, K. (1997). Heterospecific attraction affects community structure and migrant abundances in northern breeding bird communities. Canadian Journal of Zoology 75, 2077–2083.
Heterospecific attraction affects community structure and migrant abundances in northern breeding bird communities.Crossref | GoogleScholarGoogle Scholar |

Mönkkönen, M., Härdling, R., Forsman, J. T., and Tuomi, J. (1999). Evolution of heterospecific attraction: using other species as cues in habitat selection. Evolutionary Ecology 13, 91–104.
Evolution of heterospecific attraction: using other species as cues in habitat selection.Crossref | GoogleScholarGoogle Scholar |

Morelli, F., and Tryjanowski, P. (2014). Associations between species can influence the goodness of fit of species distribution models: the case of two passerine birds. Ecological Complexity 20, 208–212.
Associations between species can influence the goodness of fit of species distribution models: the case of two passerine birds.Crossref | GoogleScholarGoogle Scholar |

Morelli, F., and Tryjanowski, P. (2015). No species is an island: testing the effects of biotic interactions on models of avian niche occupation. Ecology and Evolution 5, 759–768.
No species is an island: testing the effects of biotic interactions on models of avian niche occupation.Crossref | GoogleScholarGoogle Scholar |

Morelli, F., Jerzak, L., Pruscini, F., Santolini, R., Benedetti, Y., and Tryjanowski, P. (2015). Testing bird response to roads on a rural environment: a case study from central Italy. Acta Oecologica 69, 146–152.
Testing bird response to roads on a rural environment: a case study from central Italy.Crossref | GoogleScholarGoogle Scholar |

Morelli, F., Mróz, E., Pruscini, F., Santolini, R., Goławski, A., and Tryjanowski, P. (2016). Habitat structure, breeding stage and sex affect hunting success of breeding red-backed shrike (Lanius collurio). Ethology Ecology and Evolution 28, 1–12.

Morrison, M. L., Marcot, B. G., and Mannan, R. W. (2006). ‘Wildlife–habitat Relationships: Concepts and Applications.’ 3rd edn. (Island Press: Washington, DC.)

Moskát, C., and Fuisz, T. I. (2002). Habitat segregation among the woodchat shrike, Lanius senator, the red-backed shrike, Lanius collurio, and the masked shrike, Lanius nubicus, in NE Greece. Folia Zoologica 51, 103–111.

Nikolov, B. P. (2005). Reproductive success of the woodchat shrike (Lanius senator) in western Bulgaria. Ornis Fennica 82, 73–80.

Norris, D., Rocha-Mendes, F., Frosini de Barros Ferraz, S., Villani, J. P., and Galetti, M. (2011). How to not inflate population estimates? Spatial density distribution of white-lipped peccaries in a continuous Atlantic forest: density distribution of white-lipped peccaries. Animal Conservation 14, 492–501.
How to not inflate population estimates? Spatial density distribution of white-lipped peccaries in a continuous Atlantic forest: density distribution of white-lipped peccaries.Crossref | GoogleScholarGoogle Scholar |

Onrubia, A., and Andrés, T. (2005). Impacts of human activities on steppe-land birds: a review in the context of the Western Palearctic. In ‘Ecology and Conservation of Steppe-land Birds’. (Eds G. Bota, M. B. Morales, S. Mañosa and J. Camprodon.) pp. 185–209. (Lynx Edicions and Centre Tecnològic Forestal de Catalunya: Barcelona, Spain.)

Padial, J. M., Avila, E., and Sanchez, J. M. (2002). Feeding habits and overlap among red fox (Vulpes vulpes) and stone marten (Martes foina) in two Mediterranean mountain habitats. Zeitschrift fur Saugetierkunde 67, 137–146.
Feeding habits and overlap among red fox (Vulpes vulpes) and stone marten (Martes foina) in two Mediterranean mountain habitats.Crossref | GoogleScholarGoogle Scholar |

Pearce, J., and Ferrier, S. (2000). Evaluating the predictive performance of habitat models developed using logistic regression. Ecological Modelling 133, 225–245.
Evaluating the predictive performance of habitat models developed using logistic regression.Crossref | GoogleScholarGoogle Scholar |

Pebesma, E. (2010). ‘Package gstat: Spatial and Spatio-temporal Geostatistical Modelling, Prediction and Simulation’. Available at www.cran.r-project.org.[Verified 2 February 2018]

Pebesma, E., and Bivand, R. (2011). ‘Package sp: Classes and Methods for Spatial Data.’ Available at www.cran.r-project.org.[Verified 2 February 2018]

Praca, E., and Gannier, A. (2008). Ecological niches of three teuthophageous odontocetes in the northwestern Mediterranean Sea. Ocean Science 4, 49–59.
Ecological niches of three teuthophageous odontocetes in the northwestern Mediterranean Sea.Crossref | GoogleScholarGoogle Scholar |

R Core Team (2016). ‘R: a Language and Environment for Statistical Computing.’ (R Foundation for Statistical Computing: Wien.) Available at https://www.R-project.org/.[Verified 2 February 2018]

Rocchini, D., Hortal, J., Lengyel, S., Lobo, J. M., Jimenez-Valverde, A., Ricotta, C., Bacaro, G., and Chiarucci, A. (2011). Accounting for uncertainty when mapping species distributions: the need for maps of ignorance. Progress in Physical Geography 35, 211–226.
Accounting for uncertainty when mapping species distributions: the need for maps of ignorance.Crossref | GoogleScholarGoogle Scholar |

Sattler, T., Bontadina, F., Hirzel, A. H., and Arlettaz, R. (2007). Ecological niche modelling of two cryptic bat species calls for a reassessment of their conservation status: ecological niche modelling of cryptic bat species. Journal of Applied Ecology 44, 1188–1199.
Ecological niche modelling of two cryptic bat species calls for a reassessment of their conservation status: ecological niche modelling of cryptic bat species.Crossref | GoogleScholarGoogle Scholar |

Schoener, T. W. (1974). Resource partitioning in ecological communities. Science 185, 27–39.
Resource partitioning in ecological communities.Crossref | GoogleScholarGoogle Scholar |

Sfougaris, A. I., Plexida, S. G., and Solomou, A. D. (2014). Assessing the effects of environmental factors on the presence and density of three shrike species in a continental and a coastal area of central Greece. North-Western Journal of Zoology 10, 101–109.

Sing, T., Sander, O., Beerenwinkel, N., and Lengauer, T. (2007). ‘Package ROCR: Visualizing the Performance of Scoring Classifiers.’ Available at www.cran.r-project.org.[Verified 2 February 2018]

Söderström, B., and Part, T. (2000). Influence of landscape scale on farmland birds breeding in semi-natural pastures. Conservation Biology 14, 522–533.
Influence of landscape scale on farmland birds breeding in semi-natural pastures.Crossref | GoogleScholarGoogle Scholar |

Solonen, T. (1993). Spacing of birds of prey in southern Finland. Ornis Fennica 70, 129–143.

Stamps, J. A. (1988). Conspecific attraction and aggregation in territorial species. American Naturalist 131, 329–347.
Conspecific attraction and aggregation in territorial species.Crossref | GoogleScholarGoogle Scholar |

Stamps, J. A. (1991). The effect of conspecifics on habitat selection in territorial species. Behavioral Ecology and Sociobiology 28, 29–36.
The effect of conspecifics on habitat selection in territorial species.Crossref | GoogleScholarGoogle Scholar |

Szymkowiak, J., Thomson, R. L., and Kuczyński, L. (2017). Interspecific social information use in habitat selection decisions among migrant songbirds. Behavioral Ecology 28, 767–775.
Interspecific social information use in habitat selection decisions among migrant songbirds.Crossref | GoogleScholarGoogle Scholar |

Thomson, R. L., Forsman, J. T., and Mönkkönen, M. (2003). Positive interactions between migrant and resident birds: testing the heterospecific attraction hypothesis. Oecologia 134, 431–438.
Positive interactions between migrant and resident birds: testing the heterospecific attraction hypothesis.Crossref | GoogleScholarGoogle Scholar |

Traba, J., Acebes, P., Malo, J. E., García, J. T., Carriles, E., Radi, M., and Znari, M. (2013). Habitat selection and partitioning of the black-bellied sandgrouse (Pterocles orientalis), the stone curlew (Burhinus oedicnemus) and the cream-coloured courser (Cursorius cursor) in arid areas of North Africa. Journal of Arid Environments 94, 10–17.
Habitat selection and partitioning of the black-bellied sandgrouse (Pterocles orientalis), the stone curlew (Burhinus oedicnemus) and the cream-coloured courser (Cursorius cursor) in arid areas of North Africa.Crossref | GoogleScholarGoogle Scholar |

Tucker, G. M., and Evans, M. I. (1997). ‘Habitats for Birds in Europe: a Conservation Strategy for the Wider Environment’. (BirdLife International: Cambridge, UK.)

Tucker, G. M., and Heath, M. F. (1994). ‘Birds in Europe: their Conservation Status.’ (BirdLife International: Cambridge, UK.)

Valone, T. J. (2007). From eavesdropping on performance to copying the behavior of others: a review of public information use. Behavioral Ecology and Sociobiology 62, 1–14.
From eavesdropping on performance to copying the behavior of others: a review of public information use.Crossref | GoogleScholarGoogle Scholar |

Valone, T. J., and Templeton, J. J. (2002). Public information for the assessment of quality: a widespread social phenomenon. Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences 357, 1549–1557.
Public information for the assessment of quality: a widespread social phenomenon.Crossref | GoogleScholarGoogle Scholar |

Vaughan, I. P., and Ormerod, S. J. (2005). The continuing challenges of testing species distribution models: testing distribution models. Journal of Applied Ecology 42, 720–730.
The continuing challenges of testing species distribution models: testing distribution models.Crossref | GoogleScholarGoogle Scholar |

Ward, M. P., and Schlossberg, S. (2004). Conspecific attraction and the conservation of territorial songbirds. Conservation Biology 18, 519–525.
Conspecific attraction and the conservation of territorial songbirds.Crossref | GoogleScholarGoogle Scholar |

Wintle, B. A., McCarthy, M. A., Parris, K. M., and Burgman, M. A. (2004). Precision and bias methods for estimating point survey detection probabilities. Ecological Applications 14, 703–712.
Precision and bias methods for estimating point survey detection probabilities.Crossref | GoogleScholarGoogle Scholar |

Wisz, M. S., Hijmans, R. J., Li, J., Peterson, A. T., Graham, C. H., and Guisan, A. (2008). Effects of sample size on the performance of species distribution models. Diversity & Distributions 14, 763–773.
Effects of sample size on the performance of species distribution models.Crossref | GoogleScholarGoogle Scholar |

Yosef, R. (1993). Influence of observation posts on territory size in northern shrikes. The Wilson Bulletin 105, 180–183.

Yosef, R., and Grubb, T. C. (1994). Resource dependence and territory size in loggerhead shrikes (Lanius ludovicianus). The Auk 111, 465–469.
Resource dependence and territory size in loggerhead shrikes (Lanius ludovicianus).Crossref | GoogleScholarGoogle Scholar |

Yosef, R., and Tryjanowski, P. (2000). Phenology and biometric measurements of migratory woodchat shrike (Lanius senator) at Eilat, Israel. The Ring (Gdansk) 22, 213–217.

Zuur, A. F., Ieno, E. N., and Smith, G. M. (2007). ‘Analysing Ecological Data.’ (Springer Science + Business Media, LLC: New York.)

Zuur, A. F., Ieno, E. N., and Elphick, C. S. (2010). A protocol for data exploration to avoid common statistical problems: data exploration. Methods in Ecology and Evolution 1, 3–14.
A protocol for data exploration to avoid common statistical problems: data exploration.Crossref | GoogleScholarGoogle Scholar |