Results 241 to 247 of about 514,522 (247)
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Bird Conservation International, 2022
Summary The endangered Yellow Cardinal Gubernatrix cristata is under pressure from habitat loss and from capturing for the cage bird trade. In north-east Argentina it is known to be associated with the Espinal ecoregion, but no information was available on habitat selection within this ecoregion.
Fabricio Reales +3 more
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Summary The endangered Yellow Cardinal Gubernatrix cristata is under pressure from habitat loss and from capturing for the cage bird trade. In north-east Argentina it is known to be associated with the Espinal ecoregion, but no information was available on habitat selection within this ecoregion.
Fabricio Reales +3 more
openaire +2 more sources
The Wilson Journal of Ornithology, 2008
Abstract The invasive exotic Chinese tallow tree (Triadica sebifera) produces an abundant fruit crop, which is primarily bird-dispersed. The fruit pulp of tallow is lipid-rich, high in saturated fatty acids, and consumed by many bird species. Long-chained fatty acids can be difficult for many birds to digest and we investigated the ability of tallow ...
Michael J. Baldwin +3 more
openaire +1 more source
Abstract The invasive exotic Chinese tallow tree (Triadica sebifera) produces an abundant fruit crop, which is primarily bird-dispersed. The fruit pulp of tallow is lipid-rich, high in saturated fatty acids, and consumed by many bird species. Long-chained fatty acids can be difficult for many birds to digest and we investigated the ability of tallow ...
Michael J. Baldwin +3 more
openaire +1 more source
Ethology Ecology & Evolution, 2015
Plumage coloration deriving from carotenoid and melanin pigments can be a quality signal in birds, and can be under conspecific inspection in social interactions. For example, parasite load and immune system status can be inferred through plumage color intensity, and can influence the choice of sexual partners.
R.I. Dias +4 more
openaire +1 more source
Plumage coloration deriving from carotenoid and melanin pigments can be a quality signal in birds, and can be under conspecific inspection in social interactions. For example, parasite load and immune system status can be inferred through plumage color intensity, and can influence the choice of sexual partners.
R.I. Dias +4 more
openaire +1 more source
Journal of Endocrinology, 1970
SUMMARY This report presents direct evidence for steroidogenesis by chondrostean tissue. The enzymes necessary for steroid transformation and cleavage of the cholesterol sidechain are present in yellow bodies isolated from the kidneys and along the posterior cardinal veins of the Atlantic sturgeon, Acipenser oxyrhynchus Mitchill.
D R, Idler, G B, Sangalang
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SUMMARY This report presents direct evidence for steroidogenesis by chondrostean tissue. The enzymes necessary for steroid transformation and cleavage of the cholesterol sidechain are present in yellow bodies isolated from the kidneys and along the posterior cardinal veins of the Atlantic sturgeon, Acipenser oxyrhynchus Mitchill.
D R, Idler, G B, Sangalang
openaire +2 more sources
Calculation of coefficients of a cardinal B-spline
Applied Mathematics Letters, 2010Gradimir V Milovanović
exaly