La Tour du Valat

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Blackcaps at migratory stopovers compensate for reduced gut with increased paracellular nutrient uptake

M. S. Wojciechowski, Auteur ; C. R. Tracy, Auteur ; T. J. McWhorter, Auteur ; R. Yosef, Auteur ; W. H. Karasov, Auteur ; B. Pinshow, Auteur

Dans Journal of Ornithology (147(5, Suppl. 1) AUG 2006)

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Article

Diet preferences of warblers for specific fatty acids in relation to nutritional requirements and digestive capabilities

S. R. McWilliams, Auteur ; S. B. Kearney, Auteur ; W. H. Karasov, Auteur

Dans Journal of Avian Biology (33(2) JUN 2002)

During energy-demanding periods of the annual cycle such as migration or during cold days in winter, birds store fat comprised mostly of 16- or 18-carbon unsaturated fatty acids. In such situations, birds may feed selectively on foods with speci[...]

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Article

Effects of subcutaneous transmitter implants on behavior, growth, energetics, and survival of Common Loon chicks

K. P. Kenow, Auteur ; M. W. Meyer, Auteur ; F. Fournier, Auteur ; W. H. Karasov, Auteur ; A. Elfessi, Auteur ; S. Gutreuter, Auteur

Dans Journal of Field Ornithology (74(2) SPR 2003)

High rates of Common Loon (Gavia immer) chick mortality have been documented in Wisconsin, especially on acidic lakes, but causes and timing of chick mortality are poorly understood. We modified and evaluated a subcutaneous transmitter implant t[...]

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