Results 121 to 130 of about 11,631 (283)

Vulnerability of Croatian waterbirds [PDF]

open access: yes, 2012
Ptice pripadaju među najvažnije pokazatelje ukupnoga stanja prirode zbog svoje uske vezanosti uz staništa, složenosti životnog ciklusa i potreba za različitim staništima tijekom godine.
Jelinek, Marijana
core   +2 more sources

Kiwi forego vison in the guidance of their nocturnal activities [PDF]

open access: yes, 2007
We propose that the Kiwi visual system has undergone adaptive regression evolution driven by the trade-off between the relatively low rate of gain of visual information that is possible at low light levels, and the metabolic costs of extracting that ...
Corfield, Jeremy   +5 more
core  

Evaluation of the time-activity budgets of captive ducks (Anatidae) compared to wild counterparts

open access: yesApplied Animal Behaviour Science, 2022
P. Rose   +9 more
semanticscholar   +1 more source

Aberraciones cromáticas en aves de la colección ornitológica del Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” Chromatic aberrations in birds of the ornithological collection of the Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”

open access: yesRevista del Museo Argentino de Ciencias Naturales, 2011
En el presente trabajo se determinan las aberraciones cromáticas que afectan el plumaje de las aves en la colección ornitológica del Museo Argentino de Ciencias Naturales de Buenos Aires.
Matías Ricardo Urcola
doaj  

Knowledge discovery from mining the association between H5N1 outbreaks and environmental factors [PDF]

open access: yes, 2010
The global spread of highly pathogenic avian influenza H5N1 in poultry, wild birds and humans, poses a significant panzootic threat and a serious public health risk.
Prins, H.H.T.   +3 more
core   +2 more sources

Feeding Biology of Pectoral Sandpiper Calidris Melanotos (Birds: Scolopacidae) In the Floodplain of the Paraná River, Argentina [PDF]

open access: yes, 2010
This study focuses upon the nourishing biology of the Pectoral Sandpiper at the floodplain of the Paraná river during  spring and summer. Trophic spectrum, feeding selectivity and efficiency, extent of the trophic niche, circadian rhythm of feeding ...
Bagnarol, Mónica   +4 more
core  

Notas Ornitológicas Colombianas, I

open access: yesCaldasia, 1945
Dafila bahamensis bahamensis (Linné) / Touit stictoptera (Sclater)
Dugand Armando
doaj  

HEMATOZOA OF THE ANATIDAE OF THE ATLANTIC FLYWAY. 1. MASSACHUSETTS [PDF]

open access: bronze, 1974
Gordon F. Bennett   +3 more
openalex   +1 more source

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