
%0 Journal Article
%A Olsen, PD 
%A Olsen, J 
%T Breeding of the Peregrine Falcon <I>Falco peregrinus</I>. II. Weather, Nest Quality and the Timing of Egg Laying
%J Emu
%D 1989/03/01
%V 89
%N 1
%P 1-5
%K 
%R https://doi.org/10.1071/MU9890001
%U https://www.publish.csiro.au/paper/MU9890001 
%X Peregrine Falcons near Canberra bred slightly earlier following a dry winter. The laying season was shorter and ended earlier when there were many raindays between June and September. The number of raindays in July and August accounted for 77% of the variation in the length of the laying period. A warm, dry winter was associated with a lengthened laying season. A longer, slightly earlier, laying season resulted in more pairs laying and therefore more young raised by the population. Late-laying pairs were only slightly less successful than early-laying pairs. Pairs with alternative nest(s), or with a well-drained nest, had a longer egg laying season, and more of them laid, than other pairs. Thus, pairs holding a territory with a high quality nest were advantaged over those that were not, because of the direct effect of rain. 
