Results 51 to 60 of about 3,636 (171)

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., Ben O. Brilot, Elowson A. M., Melissa Bateson, Simmons K. E. L., Van Rhijn J. G.   +5 more
core   +2 more sources

Effect of stocking density on growth performance, feather quality, serum hormone, and intestinal development of geese from 1 to 14 days of age

Poultry Science, 2021
: This study was conducted to investigate the effect of stocking density on growth performance, feather quality, serum hormone, and intestinal development of geese from 1 to 14 d of age.
Z.L. Liu, J.J. Xue, X.F. Huang, Y. Chen, Q.G. Wang, S. Zhang, C. Wang   +6 more
doaj   +1 more source

Level of stress in relation to emotional reactivity of hens

Italian Journal of Animal Science, 2019
The aim of the study was to associate behavioural reactions of laying hens with the level of stress and to answer the question whether it is possible to select reactions that will facilitate phenotypic assessment of the level of stress in these birds ...
Agnieszka Kozak, Iwona Rozempolska-Rucińska, Kornel Kasperek, Adam Bownik   +3 more
doaj   +1 more source

Keel Bone Damage in Commercial Laying Hen Hybrids. [PDF]

Vet Med Sci
This work reviews the influence of production systems, strain and age of laying hens on keel bone damages (KBDs) with the subsequent welfare implications and production losses. Damages to the keel bone are influenced to a greater extent by the type of production system and its complexity.
Abdallah N, Kursun K, Baylan M.
europepmc   +2 more sources

Higher levels of CO2 during late incubation alter the hatch time of chicken embryos [PDF]

, 2015
status ...
C. Bahr, C. E. B. Romanini, D. Berckmans, Decuypere E., H. Bergoug, I. M. McGonnell, Molenaar R., N. Eterradossi, N. Roulston, P. Garain, Q. Tong, Raff H., T.G.M. Demmers, V. Exadaktylos, Walsberg G.E.   +14 more
core   +1 more source

Shade coffee or native forest? Indicators of winter habitat quality for a long-distance migratory bird in the Colombian Andes

Ecological Indicators, 2021
Neotropical migratory songbirds overwintering at mid elevations in the Andes of northern South America depend on remnants of native forest and shade-grown coffee plantations.
Ana M. González, Nicholas J. Bayly, Scott Wilson, Keith A. Hobson   +3 more
doaj   +1 more source

Biochemical and Genomic Underpinnings of Carotenoid Colour Variation Across a Hybrid Zone Between South Asian Flameback Woodpeckers. [PDF]

Mol Ecol
ABSTRACT Colouration and patterning have been implicated in lineage diversification across various taxa, as colour traits are heavily influenced by sexual and natural selection. Investigating the biochemical and genomic foundations of these traits therefore provides deeper insights into the interplay between genetics, ecology and social interactions in
Ranasinghe RW, Hudon J, Seneviratne SS, Irwin D.   +3 more
europepmc   +2 more sources

Seasonal rainfall at long-term migratory staging sites is associated with altered carry-over effects in a Palearctic-African migratory bird. [PDF]

, 2016
BACKGROUND: An understanding of year-round habitat use is essential for determining how carry-over effects shape population dynamics in long-distance migratory songbirds. The recent discovery of long-term migratory staging sites in many species, prior to
Fairhurst, Graham D, Jenni-Eiermann, Susanne, Newton, Jason, Sorensen, Marjorie C, Spottiswoode, Claire N, Yohannes, Elizabeth   +5 more
core   +7 more sources

Feather corticosterone of a nestling seabird reveals consequences of sex-specific parental investment [PDF]

Proceedings of the Royal Society B: Biological Sciences, 2011
Offspring of long-lived species should face costs of parental trade-offs that vary with overall energetic demands encountered by parents during breeding. If sex differences exist in how parents make the trade-off, sex-specific differences may exist in the contribution of each parent to those costs.
Fairhurst, Graham D., Navarro, Joan, González-Solís, Jacob, Marchant, Tracy A., Bortolotti, Gary R.   +4 more
openaire   +3 more sources

Individual consistency of feather pecking behavior in laying hens: once a feather pecker always a feather pecker?

Frontiers in Veterinary Science, 2015
TThe pecking behavior (severe feather, gentle feather, and aggressive pecks) of individual White Shaver non-cage laying hens (n = 300) was examined at 21, 24, 27, 32, and 37 wk. Hens were housed in 30 groups of 10 hens each and on 3cm litter with access
Courtney L Daigle, T. Bas Rodenburg, J. Elizabeth eBolhuis, Janice C. Swanson, Janice M Siegford   +4 more
doaj   +1 more source