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Mostrando ítems 11-20 de 2055
Seasonal modulation of testosterone during breeding of the rufous-collared sparrow (Zonotrichia capensis australis) in Southern Patagonia
(2013)
The roles of testosterone (T) during reproduction are often complex and vary among and within vertebrate taxa and locations, making general hypotheses relating T to breeding behavior and success difficult to integrate. In ...
Nest location, clutch size and nest success in the Scarlet Ibis Eudocimus ruber
(British Ornithologists Union, 2003-01-01)
Breeding success and nest-site characteristics were studied during the 1996-1997 breeding season in a colony of Scarlet Ibises Eudocimus ruber in south-eastern Brazil to test the hypothesis that nest-site characteristics ...
Nest location, clutch size and nest success in the Scarlet Ibis Eudocimus ruber
(British Ornithologists Union, 2003-01-01)
Breeding success and nest-site characteristics were studied during the 1996-1997 breeding season in a colony of Scarlet Ibises Eudocimus ruber in south-eastern Brazil to test the hypothesis that nest-site characteristics ...
Breeding phenology and nest survival of cinereous (circus cinereus) and long-winged (c. buffoni) harriers in the agricultural landscapes of north-east Patagonia, Argentina
(Csiro Publishing, 2017-11)
We present novel data on breeding ecology and nest survival of the Cinereous (Circus cinereus) and Long-winged (C. buffoni) Harriers in modified grasslands of southern Argentina and we evaluate variations in daily nest ...
Decline in numbers of Antarctic skuas breeding at Potter Peninsula, King George Island, Antarctica
(Pacific Seabird Group, 2014-07)
The Brown Skua (Stercorarius antarcticus lonnbergi) and the South Polar Skua (S. maccormicki) breed in Antarctica and, in the case of Brown Skua, on sub-Antarctic islands (Ritz et al. 2008). During the austral summer ...