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RESEARCH ARTICLE
Contents Vol 108(4)

Primary moult of adult Red-billed Queleas (Quelea quelea) in southern Africa in relation to patterns of movement

H. Dieter Oschadleus A B and Les G. Underhill A
+ Author Affiliations
- Author Affiliations

A Animal Demography Unit, Department of Zoology, University of Cape Town, Rondebosch, 7701, South Africa.

B Corresponding author. Email: dieter.oschadleus@uct.ac.za

Emu 108(4) 331-339 https://doi.org/10.1071/MU08019
Submitted: 17 April 2008  Accepted: 29 October 2008   Published: 9 December 2008

Abstract

The onset and duration of primary moult were investigated for adult Red-billed Queleas (Quelea quelea) in southern Africa. The duration of moult was shortest in Namibia (75 days), intermediate in Botswana (83 days) and longest in Gauteng Province (101 days) and the Eastern Cape (124 days), South Africa. The timing of the onset of moult was similar in Namibia and Botswana (21 and 31 May respectively), but considerably earlier in the Eastern Cape and Gauteng Province (6 and 23 April respectively). Completion of primary moult was well synchronised, ending in August in all sub-regions. Production of feather mass was uniform and speed of moult was controlled by the rate of growth of individual primaries. When moult was faster, fewer feathers grew simultaneously, possibly to reduce the aerodynamic effect of the wing-gap. Red-billed Queleas are thought to migrate relative to the movement of rain fronts, allowing possible multiple breeding events in one season. In southern Africa, Queleas are present throughout their range all year, and a proportion of the population moves short distances in apparently random directions. The large differences in timing and duration of moult in this study only support the short-distance ‘rainfall-migration’ model.


Acknowledgements

Ringing data were provided by Tim Osborne for Namibia, and Hans Meevis for Botswana. Thirty-eight ringers contributed data for Gauteng, especially Kobie Raijmakers, Hennie de Klerk, Shonie Raijmakers, Graham Grieve, Colin de Kock, Gail Schaum and Rihann Geyser. The Eastern Cape data were provided by Pat Hulley, Adrian Craig, Bo Bonnevie and Craig Whittington-Jones. Helpful comments on earlier drafts were provided by Lorenzo Serra, Marienne de Villiers, Peter Jones and Barbara Helm. This research was supported by a National Research Foundation (NRF) bursary to HDO. SAFRING’s current main sponsors are the Namibian Ministry of Environment and Tourism, and the Tony and Lisette Lewis Foundation. The University of Cape Town provides SAFRING with accommodation and services. LGU acknowledges support from the NRF and the University of Cape Town Research Committee.


References

Allan D. G. , Harrison J. A. , Navarro R. A. , and Martinez P. (1995). The Redbilled Quelea and non-target birds – insights from bird atlas data. Research Report of the Avian Demography Unit, University of Cape Town, Cape Town.

Allan D. G. , Harrison J. A. , Herremans M. , Navarro R. A. , and Underhill L. G. (1997). South African geography: its relevance to birds. In ‘The Atlas of Southern African Birds. Vol. 1: Non-passerines’. (Eds J. A. Harrison, D. G. Allan, L. G. Underhill, M. Herremans, A. J. Tree, V. Parker and C. J. Brown.) pp. lxv–ci. (BirdLife South Africa: Johannesburg.)

Bruggers R. L. , and Elliott C. C. H. (Eds) (1989). ‘Quelea quelea – Africa’s Bird Pest.’ (Oxford University Press: Oxford, UK.)

Craig A. J. F. K. (2004). Quelea quelea. In ‘Birds of Africa. Vol. 7: Sparrows to Buntings’. (Eds C.H. Fry and S. Keith.) pp. 207–212. (Christopher Helm: London.)

Craig, A. J. F. K. , Hulley, P. E. , Whittington-Jones, C. A. , and Bonnevie, B. T. (2001). Flying times and flight feathers: patterns of moult in sympatric seedeaters. Ostrich 15(Suppl.), 66–70.
de Beer S. J. , Lockwood G. M. , Raijmakers J. H. F. A. , Raijmakers J. M. H. , Scott W. A. , Oschadleus H. D. , and Underhill L. G. (2001). ‘SAFRING Bird Ringing Manual.’ Avian Demography Unit Guide 5. (Avian Demography Unit, University of Cape Town: Cape Town.)

Elliott C. C. H. (1989). The pest status of the quelea. In ‘Quelea quelea – Africa’s Bird Pest’. (Eds R. L. Bruggers and C. C. H. Elliott.) pp. 17–34. (Oxford University Press: Oxford, UK.)

Elliott, C. C. H. (1990). The migrations of the Red-billed Quelea Quelea quelea and their relation to crop damage. Ibis 132, 232–237.
| Crossref | GoogleScholarGoogle Scholar | Jarvis M. J. F. (1989). Quelea breeding and seasonal distribution in southern Africa. In ‘Africa’s Feathered Locust’. (Eds P. J. Mundy and M. J. F. Jarvis.) pp. 69–83. (Boabab Books: Harare.)

Jones P. J. (1989 a). General aspects of quelea migration. In ‘Quelea quelea – Africa’s Bird Pest’. (Eds R. L. Bruggers and C. C. H. Elliott.) pp. 102–112. (Oxford University Press: Oxford, UK.)

Jones P. J. (1989 b). Distribution, populations, and migration patterns of quelea in southern Africa. In ‘Quelea quelea – Africa’s Bird Pest’. (Eds R. L. Bruggers and C. C. H. Elliott.) pp. 132–143. (Oxford University Press: Oxford, UK.)

Jones P. J. (1989 c). The breeding cycle of Quelea quelea and factors initiating breeding. In ‘Africa’s Feathered Locust’. (Eds P. J. Mundy and M. J. F. Jarvis.) pp. 36–49. (Boabab Books: Harare.)

Jones, P. J. , Elliott, C. C. H. , and Cheke, R. A. (2002). Methods for ageing juvenile Redbilled Queleas, Quelea quelea, and their potential for the detection of juvenile dispersal patterns. Ostrich 73, 43–48.
Mundy P. J. , and Herremans M. (1997). Redbilled Quelea Quelea quelea. In ‘The Atlas of Southern African Birds. Vol. 1: Non-passerines’. (Eds J. A. Harrison, D. G. Allan, L. G. Underhill, M. Herremans, A. J. Tree, V. Parker and C.J. Brown.) pp. 573–575. (BirdLife South Africa: Johannesburg.)

Mundy P. J. , and Jarvis M. J. F. (Eds) (1989). ‘Africa’s Feathered Locust.’ (Boabab Books: Harare.)

Oschadleus H. D. (2000 a). Red-billed Quelea movements in Southern Africa shown by ringing recoveries in the SAFRING database. In ‘Workshop on Research Priorities for Migrant Pests of Agriculture in Southern Africa, Plant Protection Research Institute, Pretoria, South Africa, 24–26 March 1999’. (Eds R. A. Cheke, L. J. Rosenberg, and M. E. Kieser.) pp. 125–135. (Natural Resources Institute: Chatham, UK.)

Oschadleus, H. D. (2000b). First bird-ringing course held at Witsand Reserve. Bird Numbers 9(1), 14.Available at [Verified 14 November 2008].
Oschadleus H. D. (2001). Bibliography of the African quelea species. Research Report of the Avian Demography Unit, University of Cape Town, Cape Town.

Oschadleus, H. D. , and Osborne, T. (2005). Chestnut Weaver Ploceus rubiginosus biometrics and primary moult in Namibia. Ostrich 76, 206–211.
Parker V. (1999). ‘The Atlas of the Birds of Sul do Save, Southern Mozambique.’ (Avian Demography Unit, University of Cape Town and Endangered Wildlife Trust: Cape Town and Johannesburg.)

Parker V. (2005). ‘The Atlas of the Birds of Central Mozambique.’ (Endangered Wildlife Trust and Avian Demography Unit, University of Cape Town: Johannesburg and Cape Town.)

Serra L. (2002). Cold winters vs. long journeys: adaptations of primary moult and body mass to migration and wintering in the Grey Plover Pluvialis squatarola. Ph.D. Thesis, University of Cape Town.

Summers, R. W. , Swann, R. L. , and Nicoll, M. (1980). Unbending moult data. Wader Study Group Bulletin 30, 12–13.Available at [Verified 14 November 2008].
Underhill L. G. (2003). Within ten feathers: primary moult strategies of migratory waders (Charadrii). In ‘Avian Migration’. (Eds P. Berthold, E. Gwinner and E. Sonnenschein.) pp. 187–197. (Springer-Verlag: Heidelberg.)

Underhill, L. G. , and Summers, R. W. (1993). Relative masses of primary feathers in waders. Wader Study Group Bulletin 71, 29–31.Available at [Verified 14 November 2008].
Underhill L. G. , Serra L. , and Brandao A. (2006). Progress with the statistical analysis of primary moult. In ‘Proceedings of the XXIII International Ornithological Congress’, 11–17 August 2002, Beijing, China. Acta Zoologica Sinica vol. 52(Suppl.), pp. 440–443. (Science Press: Beijing)

Ward, P. (1971). The migration patterns of Quelea quelea in Africa. Ibis 113, 275–297.
| Crossref | GoogleScholarGoogle Scholar |

Whittington-Jones, C. A. , Hulley, P. E. , and Craig, A. J. F. K. (2001). Red-billed Queleas Quelea quelea in the Eastern Cape, South Africa: are they settling down? Ostrich 15(Suppl.), 89–91.


Zenatello, M. , Serra, L. , and Baccetti, N. (2002). Trade-offs among body mass and primary moult patterns in migrating Black Terns Chlidonias niger. Ardea 90(3), 411–420.