Effect of food abundance on laying date and clutch size in the White Stork Ciconia ciconia

摘要: CapsuleFood independently affects both laying date and clutch size, suggesting that seasonal decline in size is related to a decrease food availability. Aim To test the effect of abundance on White Stork identify cause number eggs laid. Methods During 1991 1996 we recorded pairs breeding next rubbish dumps (food abundant constant throughout season) birds far from (using natural sources). Results In there was no difference mean between nesting at control pairs. Clutch significantly larger dump nests. contrast, earlier significant differences sizes, even when controlling for effect. Conclusion The results support hypothesis availability da...