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Auteur Joseph B. Williams |
Documents disponibles écrits par cet auteur (4)
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Article
Joseph B. Williams, Auteur ; Morne Du Plessis, AuteurGreen Woodhoopoes (Phoeniculidae: Phoeniculus purpureus) are cooperative breeding birds that live throughout the year in groups of 2 to 16 individuals. Individuals roost in groups in cavities at night. The energy savings associated with communal[...]![]()
Article
B. Irene Tieleman, Auteur ; Maaike A. Versteegh, Auteur ; Anthony Fries, Auteur ; Barbara Helm, Auteur ; Niels J. Dingemanse, Auteur ; H. Lisle Gibbs, Auteur ; Joseph B. Williams, AuteurDespite their central importance for the evolution of physiological variation, the genetic mechanisms that determine energy expenditure in animals have largely remained unstudied. We used quantitative genetics to confirm that both mass-specific [...]![]()
Article
Joseph B. Williams, Auteur ; B. I. Tieleman, Auteur ; Mohammed Shobrak, AuteurAs part of a study on the core body temperature (T(b)) of desert birds, we purposed to use temperature-sensitive implantable radio transmitters. Because of the difficulty in recapturing these birds, we needed to know if these electronic devices [...]



