La Tour du Valat

Article

Individual quality and food availability determine yolk and egg mass and egg composition in tree swallows Tachycineta bicolor

D. R. Ardia, Auteur ; M. F. Wasson, Auteur ; D. W. Winkler, Auteur

Dans Journal of Avian Biology (37(3) MAY 2006)

Variation in egg size and composition can have important consequences for the quality of offspring. We investigated the factors influencing the yolk mass and egg mass of tree swallows breeding in Ithaca, NY. Using a nondestructive technique to e[...]

Plus d'information...

Ajouter au panier

Article

Warm temperatures lead to early onset of incubation, shorter incubation periods and greater hatching asynchrony in tree swallows Tachycineta bicolor at the extremes of their range

D. R. Ardia, Auteur ; C. B. Cooper, Auteur ; A. A. Dhondt, Auteur

Dans Journal of Avian Biology (37(2) MAR 2006)

The onset of incubation varies in birds, with many species beginning incubation prior to clutch completion. Here we examine whether early onset is more likely to occur during high temperatures, a critical prediction of the egg-viability hypothes[...]

Plus d'information...

Ajouter au panier