Results 91 to 100 of about 246,696 (380)

Criterios para determinar la edad de pollos de Flamenco Austral (Phoenicopterus chilensis) en cautiverio basadas en características del plumaje [PDF]

open access: yes, 2018
Many aspects of the breeding biology of the Chilean Flamingo (Phoenicopterus chilensis) are still unknown. We studied captive breeding Chilean Flamingos at La Plata Zoo, Buenos Aires, Argentina between February and July 2014 to document chick‐aging ...
Chiale, Maria Cecilia   +2 more
core  

Intrafeather and Intraindividual Variation in the Stable-Hydrogen Isotope (δD) Content of Raptor Feathers [PDF]

open access: yes, 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

Heat Stress in Quail: Impacts on Health and Productivity, and Mitigation Strategies

open access: yesAnimal Research and One Health, EarlyView.
Heat stress disrupts physiological homeostasis in quail, inducing oxidative stress, immune dysregulation, and metabolic imbalance, which impair growth, reproduction, product quality, and welfare. Integrating nutritional, environmental, and genetic–epigenetic strategies enhances thermotolerance, sustains productivity, and supports climate‐smart quail ...
T. A. Eletu   +6 more
wiley   +1 more source

Evolution of breeding plumages in birds: A multiple‐step pathway to seasonal dichromatism in New World warblers (Aves: Parulidae)

open access: yesEcology and Evolution, 2020
Many species of birds show distinctive seasonal breeding and nonbreeding plumages. A number of hypotheses have been proposed for the evolution of this seasonal dichromatism, specifically related to the idea that birds may experience variable levels of ...
Ryan S. Terrill   +2 more
doaj   +1 more source

Eggs in the freezer: energetic consequences of nest site and nest design in Arctic breeding shorebirds [PDF]

open access: yes, 2012
Birds construct nests for several reasons. For species that breed in the Arctic, the insulative properties of nests are very important. Incubation is costly there and due to an increasing surface to volume ratio, more so in smaller species. Small species
De Leeuw, Joep   +2 more
core   +1 more source

Gut Health in Ostriches (Struthio camelus): Insights Into Intestinal Structure, Functions, Microbiome, and Improvement Strategies

open access: yesAnimal Research and One Health, EarlyView.
Our paper systematically reviews the intestinal structure, function, and microbiota of ostriches, along with strategies for improving their gut health. We analyze how these factors collectively influence intestinal homeostasis and ostrich welfare, emphasizing probiotics as a promising intervention to enhance gut health, boost population well‐being, and
Zi‐Qun Zhang   +6 more
wiley   +1 more source

The Isolation and Identification of Bacteria on Feathers of Migratory Bird Species

open access: yesMicroorganisms, 2018
Worldwide, bacteria are the most ubiquitous microorganisms, and it has been extensively demonstrated that migratory wild birds can increase bacterial global scale dispersion through long-distance migration and dispersal. The microbial community hosted by
Antonella Giorgio   +4 more
doaj   +1 more source

Source identification and quantification of particulate matter emitted from livestock houses [PDF]

open access: yes, 2010
There is need to identify and quantify the contribution of different sources to airborne particulate matter (PM) emissions from animal houses. To this end, we compared the chemical and morphological characteristics of fine and coarse PM from known ...
Aarnink, A.J.A.   +5 more
core   +2 more sources

Bridging home, school and community to address educational inequality: Supporting educational trajectories through community bridge work

open access: yesBritish Educational Research Journal, EarlyView.
Abstract This paper explores the role of community stakeholders in supporting the educational trajectories of students experiencing socio‐economic disadvantage in the Irish context. Building on international and national policy debates, the study examines how community‐based organisations, statutory services and outreach initiatives work alongside ...
Aoife Joy Keogh, Deirdre McGillicuddy
wiley   +1 more source

Effect of Feathers as Nest Insulation on Incubation Behavior and Reproductive Performance of Tree Swallows (\u3cem\u3eTachycineta bicolor\u3c/em\u3e) [PDF]

open access: yes, 1995
Many species of birds line their nests with feathers, presumably because of the insulative qualities of feathers and because feathers may act as a barrier between nest parasites and nestlings.
Bosman, Ruth M   +4 more
core   +1 more source

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