Results 31 to 40 of about 44,293 (251)
Mechanics Of Flight Feathers: Effects Of Captivity? [PDF]
, 2020 ABSTRACTFeathers act as aerodynamic cantilevers, and to withstand the prolonged cyclical loading that occurs during flight, feathers must be stiff, lightweight and strong. We experimentally tested the differences in feather structure, primarily stiffness and size, between (a) wild and captive Barnacle GeeseBranta leucopsis,and (b) primary feathers ...
Portugal, Steven J. +5 more
openaire +1 more source
Nature Communications, 2017 Asymmetric feather vane shape was a critical innovation in feather evolution and adaptation for flight. Here, Li and colleagues characterize the multi-module regulatory network that controls feather vane shape and underlies feather diversification.
Ang Li +6 more
doaj +1 more source
Water bathing alters threat perception in starlings. [PDF]
, 2012 The majority of bird taxa perform water bathing, but little is known about the adaptive value of this behaviour. If bathing is important for feather maintenance then birds that have not bathed should have poorer feather condition, compromised escape ...
Bateson M. +5 more
core +2 more sources
Veterinary and Animal Science, 2021 : Measuring corticosterone concentrations in feathers of poultry may be suitable to determine birds' exposure to stress. It is thinkable, that in laying hens such information could be helpful as an animal welfare indicator to evaluate adverse husbandry ...
Katharina Elisabeth Häffelin +8 more
doaj +1 more source
Plasma metabolites reflect seasonally changing metabolic processes in a long-distance migrant shorebird (Calidris canutus) [PDF]
, 2002 Migrant birds have tightly scheduled annual cycles consisting of several distinct life cycle (sub-)stages such as reproduction, migration, moult and overwintering, each of which have specific metabolic requirements (e.g., fattening during migration ...
Jenni, Lukas, +2 more
core +2 more sources
Feather corticosterone content in predatory birds in relation to body condition and hepatic metal concentration [PDF]
, 2015 This study investigated the feasibility of measuring corticosterone in feathers from cryo-archived raptor specimens, in order to provide a retrospective assessment of the activity of the stress axis in relation to contaminant burden. Feather samples were
Henrys, Peter A. +4 more
core +1 more source
Animals, 2020 Deflighting zoo birds is a practice that receives increasing criticism due to its presumed incompatibility with animal welfare. To our knowledge, this is the first approach to address this problem in a scientific way.
Lukas Reese +10 more
doaj +1 more source
Do seaducks minimise the flightless period? Inter- and intra-specific comparisons of remigial moult. [PDF]
PLoS ONE, 2014 Remigial moult is one of the crucial events in the annual life cycle of waterfowl as it is energetically costly, lasts several weeks, and is a period of high vulnerability due to flightlessness. In waterfowl, remigial moult can be considered as an energy-
Anouck Viain +4 more
doaj +1 more source
Ecological factors driving the feather mite associations in tropical avian hosts
Journal of Avian Biology, 2022 Birds host a diversity of ectosymbionts including feather‐dwelling arthropods such as feather mites and lice that they have co‐evolved and speciated with.
Kasun H. Bodawatta +7 more
doaj +1 more source
Intrafeather and Intraindividual Variation in the Stable-Hydrogen Isotope (δD) Content of Raptor Feathers [PDF]
, 2008 Stable-hydrogen isotope ratios (deuterium:protium; δD) in feathers enable researchers to evaluate patterns of avian movement and to estimate the source areas of migratory birds.
Donohue, Kara +2 more
core +2 more sources