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Geographical and seasonal gradients in hatching failure in Eastern Bluebirds Sialia sialis reinforce clutch size trends

C. B. Cooper, Auteur ; W. M. Hochachka, Auteur ; T. B. Phillips, Auteur ; A. A. Dhondt, Auteur

Dans Ibis (148(2) APR 2006)

Eggs untended during the laying phase can lose viability if exposed to high temperatures, such as those common at lower latitudes and late in the nesting season. The egg-viability hypothesis states that constraints on viability during the laying[...]

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