Results 71 to 80 of about 22,315 (220)

Species composition and distribution of gallinaceous birds (Aves, Galliformes) in the south of eastern Europe during the Late Pleistocene and Holocene—a review

open access: yesBoreas, Volume 55, Issue 2, Page 308-326, April 2026.
This study investigates the species composition and distribution of gallinaceous birds (Galliformes) in the south of eastern Europe, specifically within the territory of present‐day Ukraine, during the Late Pleistocene and Holocene. The research is based on the comprehensive revision of skeletal remains found at archaeological sites.
Leonid Gorobets   +3 more
wiley   +1 more source

Effectiveness of territorial protection categories in conserving an endemic island bird during population fluctuation

open access: yesConservation Science and Practice, Volume 8, Issue 4, April 2026.
Static boundaries of protected areas failed to capture the Canary Islands stonechat's shifting distribution patterns. Abstract Protected areas represent cornerstones of biodiversity conservation on oceanic islands, yet their effectiveness for endemic species remains poorly evaluated. We assessed how various territorial protection categories conserve an
Luis M. Carrascal   +2 more
wiley   +1 more source

Efeito dos níveis de triptofano digestível em dietas para codornas japonesas em postura Dietary digestible tryptophan levels for Japanese laying quails

open access: yesRevista Brasileira de Zootecnia, 2008
O nível dietético adequado (0,12; 0,16; 0,20; 0,24 e 0,28%) de triptofano digestível foi avaliado em 400 codornas japonesas de 21 a 30 semanas de idade, fase de postura. As codornas foram alojadas em gaiolas de 125 cm²/ave, com peso inicial de 158,50 g e
Sandra Regina Freitas Pinheiro   +5 more
doaj   +1 more source

Characteristics and Behavior of Guineafowl and Domesticated Chicken Hybrids [PDF]

open access: yes, 1976
The description, behavior, and morphologic measurements are presented for two hybrid crosses of domesticated chicken and guineafowl. The ease at which gallinaceous birds hybridize might warrant a closer look at the classification system.
Hanebrink, Earl L.
core   +2 more sources

Exposure to the Oestrogenic Pollutant 17α‐Ethinyl Estradiol (EE2) Does Not Alter the Behaviour of a Coastal Marine Fish, Cristiceps australis

open access: yesEthology, Volume 132, Issue 4, Page 295-304, April 2026.
Environmental contamination with the synthetic estrogen 17α‐ethinyl estradiol (EE2) is widespread in coastal ecosystems, yet behavioural effects in marine fishes remain poorly understood. We exposed southern crested weedfish (Cristiceps australis) to low and high EE2 concentrations for 14 days and assessed boldness and anxiety using a refuge‐use assay.
Shiho Ozeki   +6 more
wiley   +1 more source

Pengaruh Tepung Daun Sukun (Artocarpus altilis) terhadap Produksi dan Kualitas Telur Puyuh (Coturnix-coturnic japonica)

open access: yesJurnal Agripet, 2017
ABSTRAK. Penelitian ini bertujuan untuk mengetahui pengaruh tepung daun sukun (artocarpus altilis) terhadap produksi telur dan kualitas telur puyuh (Coturnix-coturnix japonica). Materi yang digunakan dalam penelitian ini adalah burung puyuh betina umur 2
Elly Tugiyanti   +2 more
doaj   +1 more source

DETEKSI SALMONELLA SP. PADA DAGING PUYUH (COTURNIXCOTURNIX JAPONICA) AFKIR DI KECAMATAN DARUL IMARAH KABUPATEN ACEH BESAR [PDF]

open access: yes, 2018
DETEKSI Salmonella sp. PADA PADA DAGING PUYUH (Coturnix-coturnix japonica) AFKIR DI KECAMATAN DARULIMARAH KABUPATEN ACEH BESARABSTRAKPenelitian ini bertujuan mendeteksi Salmonella sp.
UCI HERAWATI
core  

Context‐Dependent Effects of Amino Acid Supplementation on Nestling Growth and Baseline Innate Immune Function

open access: yesEcology and Evolution, Volume 16, Issue 3, March 2026.
We experimentally supplemented great tit nestlings with methionine, leucine, or tap water to test how essential amino acids influence growth and immune function in forest and suburban habitats. Supplementation increased mass gain in smaller forest nestlings and enhanced lysis activity with methionine in suburban populations.
Ashetu Debelo Terefa   +3 more
wiley   +1 more source

Silent Spring - the lost call [PDF]

open access: yes, 2008
The "silence" in Rachel Carson's Silent Spring1 alludes to the demise of bird populations through reproductive problems and death resulting from exposure to the pesticides of that time, many of which are endocrine active.
Mary Ann Ottinger, Michael J. Quinn
core   +1 more source

Oxidative costs of migration: infections as an added burden

open access: yesJournal of Avian Biology, Volume 2026, Issue 2, March 2026.
There is increasing evidence that over‐production of reactive species (RS) constitutes a significant physiological cost for migrating birds. The current view entails that RS during migration originate primarily from increased metabolic activity associated with prolonged flights and refueling.
Michael Tobler   +5 more
wiley   +1 more source

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