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Article
Jowita Niedojadlo, Auteur ; Agata Bury, Auteur ; Mariusz Cichoń, Auteur ; Edyta T. Sadowska, Auteur ; Ulf Bauchinger, AuteurThermoregulation constitutes an important share of the energy budget of endotherms. Elevated thermoregulatory requirements must be met by oxygen supply through the blood, as heat is produced mainly via aerobic processes. In contrast to mammal st[...]
Article
Megan M. Skrip, Auteur ; Ulf Bauchinger, Auteur ; Wolfgang Goymann, Auteur ; Leonida Fusani, Auteur ; Scott R. McWilliams, AuteurDuring migration, many songbirds encounter large ecological barriers, like deserts and seas that require substantial fuel to cross and can lead to dehydration during passage. If muscle is not catabolized to generate metabolic water, birds must s[...]
Article
Miriam Ben-Hamo, Auteur ; Darren John Burns, Auteur ; Ulf Bauchinger, Auteur ; Shomen Mukherjee, Auteur ; Keren Embar, Auteur ; Berry Pinshow, AuteurBirds lose feathers, whether during molt or by accident, and replace them by processes that are energetically demanding. We hypothesized that house sparrows Passer domesticus biblicus use behavioral means to save energy when feathers are lost, a[...]
Article
Elizabeth Yohannes, Auteur ; Raymond Lee, Auteur ; Vladimir Popenko, Auteur ; Ulf Bauchinger, AuteurIn migratory birds, seasonal factors interacting at different stages of the annual cycle can influence individual life histories. These have been well documented for Nearctic-Neotropical birds. Yet, seasonal interactions between the wintering, m[...]
Article
Ulf Bauchinger, Auteur ; Scott R. McWilliams, AuteurPhenotypic flexibility in organ size of migratory birds is typically explained in functional terms in accordance with the principal of economic design. However, proposed functional hypotheses do not adequately explain differences in phenotypic f[...]
Article
Ulf Bauchinger, Auteur ; Scott R. McWilliams, Auteur ; Harald Kolb, Auteur ; Vladimir M. Popenko, Auteur ; Edwin R. Price, Auteur ; Herbert Biebach, AuteurThe pectoral muscle is the biggest organ within a passerine bird. It provides flight locomotion and is known to act as a protein source during periods with increased protein demands or decreased protein availability. The mass of the flight muscl[...]
Article
Darren John Burns, Auteur ; Miriam Ben-Hamo, Auteur ; Ulf Bauchinger, Auteur ; Berry Pinshow, AuteurAn advantage of huddling in the cold is that the individual animals involved can maintain body temperature while saving energy. Since house sparrows Passer domesticus biblicus store little fat, but inhabit relatively cold climates, we tested the[...]
