Search

The article presents a study on the geographical variation based in laying date, clutch size and overall fledglings, as well as the latitudinal variations in breeding parameters of the kestrel Falco tinnunculus through general linear models. It states several possible factors in breeding parameters of kestrels such as limitation of food resources, Ashmole's hypothesis, and predation of nests. The study shows positive correlation of the mean laying date and the significant increase in the mean clutch size with latitude, which varies on different nest types including nest-box and natural nests. Results of the study reveal that nest types and climate factors like temperature and rainfall affects latitudinal variations.