Results 171 to 180 of about 11,765,015 (192)

Early avoidance of human-dominated landscapes by juvenile Alpine golden eagles

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Observations on the Post-Fledging Dependence Period of Cape Vultures

Ostrich, 1985
Summary Robertson, A. S. 1985. Observations on the post-fledging dependence period of Cape Vultures. Ostrich 56: 58–66. Cape Vultures were observed during their post-fledging dependence period at a colony in the Cape Province, South Africa. Information is presented on the length of the period, behaviour of juveniles and of parents at the nest, survival
A S Robertson
exaly   +2 more sources

Movement and Behavior of Scarlet Macaws (Ara macao) During the Post-Fledging Dependence Period: Implications for in Situ Versus Ex Situ Management

Biological Conservation, 2004
Knowledge of scarlet macaw (Ara macao) biology during the post-fledging period is limited, yet information about this important life stage is critical to developing effective conservation strategies. We used radiotelemetry to study the post-fledging movements and behavior of scarlet macaws from an isolated and threatened population in Costa Rica.
Christopher Vaughan
exaly   +2 more sources

Ecological Drivers of Variation in the Extent of the Post-Fledging Dependence Period in the Largest Group of Diurnal Raptors

Ibis
The post‐fledging dependence period (PFDP) is a fundamental stage in the life cycle of altricial birds that influences their long‐term survival and fitness. However, research on the duration of this period in raptors, and on the factors affecting it, is scarce.
Diego Gallego, José Sarasola
exaly   +3 more sources

Influence of Nesting Location on Movements and Survival of Juvenile Saker FalconsFalco cherrugDuring the Post-Fledging Dependence Period

Ardeola, 2015
Summary. We used patagial tags, VHF radio transmitters, and satellite-received transmitters to investigate the movements and survival of juvenile saker falcons fledged from artificial nests in open landscapes and natural nest sites in hilly areas in Mongolia.
Md Lutfor Rahman   +4 more
openaire   +1 more source

The function of aggressive chases by breeding Black and Red Kites Milvus migrans and M. milvus during the post‐fledging dependence period

Ibis, 1993
Black and Red Kites Milvus migrans and M. milvus chase other raptors approaching their nests. The study of this behaviour during the post‐fledging period suggested that it reflects mainly, but not only, anti‐predator behaviour. The frequency of vigilance and aggressive chases decreased through the post‐fledging period as predicted by theoretical models
JAVIER BUSTAMANTE, FERNANDO HIRALDO
openaire   +1 more source

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