Results 11 to 20 of about 11,765,015 (192)

Small Ranging Area and Less Mobile Pattern of a Long-Distance Migratory Raptor During the Post-Fledging Dependence Period, Determined by Fledging Date and Forest Preferences

open access: yesBirds
The central point of evolutionary ecology is understanding the drivers of variation in life-history strategies among organisms. The post-fledging dependence period is a critical life-history stage in the life cycle of altricial birds, influencing their ...
Dimitar Atanasov Demerdzhiev   +6 more
doaj   +3 more sources

Post-fledging Dependence Period in the Eurasian Kestrel (Falco tinnunculus) in Western France [PDF]

open access: yesJournal of Raptor Research, 2014
Abstract The post-fledging dependence period (PDP) of 25 Eurasian Kestrel (Falco tinnunculus) fledglings was studied in a coastal marsh in western France in 2002 and 2003. Body condition at fledging was the only parameter that had a positive effect on the length of the PDP, which averaged 18 d (range 3–31 d). Mean daily distance from the nest increased
Boileau, Nicolas, Bretagnolle, Vincent
openaire   +3 more sources

Post-fledging dependence period and development of flight and hunting behaviour in the Red KiteMilvus milvus

open access: yesBird Study, 1993
he post fledging dependence period of 37 Red Kites was studied in the Doñ¸ana Biological Reserve (Spain). The juveniles fledged at a mean age of 55.1 days and remained near the nest, depending on their parents for food, for on average a further 25.6 days.
Bustamante, Javier
openaire   +3 more sources

Home range size of Tengmalm’s owl offspring during the post-fledging dependence period in Central and North Europe

open access: yesFrontiers in Ecology and Evolution
A greater knowledge of the intrinsic and extrinsic factors of animal home range (HR) formation can help us to understand the fundamental biological issues underlying, for instance, movement patterns, habitat selection and survival.
Simona Stehlíková Sovadinová   +8 more
doaj   +2 more sources

Individual and environmental effects on the extent of the post-fledging dependence period in an Endangered neotropical raptor

open access: yesEndangered Species Research
In altricial birds, the post-fledging dependence period (PFDP) is a fundamental life-history stage with direct consequences for survival, dispersal, and future reproduction.
D Gallego-García, BD Watts, JH Sarasola
doaj   +2 more sources

Post-Fledging Dependence Period of OspreysPandion haliaetusReleased in Central Italy: Home Ranges, Space Use and Aggregation

open access: yesArdeola, 2012
Summary.—Space-use strategies are essential behavioural skills during the fledging-to-dispersal period, when physical capabilities and the ability to explore the external world are developed. Here we describe the space-use strategies of 13 radio-tagged ospreys Pandion haliaetus, released as part of a reintroduction project in Central Italy, during ...
Monti Flavio   +2 more
openaire   +3 more sources

Providing longer post-fledging periods increases offspring survival at the expense of future fecundity. [PDF]

open access: yesPLoS ONE, 2018
The cost of reproduction is a key concept in life-history trade-offs. However, our understanding of the reproductive costs is biased towards measures of reproductive effort obtained before offspring independence.
David López-Idiáquez   +3 more
doaj   +1 more source

The contribution of flight capability to the post‐fledging dependence period of golden eagles

open access: yesJournal of Avian Biology, 2018
The period prior to an individual emigrating from its natal site and initiating dispersal is important for developing the skills that are ultimately required for surviving natal dispersal. Using a novel method to quantify the early movements of 35 juvenile golden eagles fitted with satellite transmitters, we hypothesised that variation in golden eagles’
Ewan D. Weston   +3 more
openaire   +1 more source

Time Spent With Parents Varies With Early-Life Condition, but Does Not Predict Survival or Sociality of Juvenile Hihi

open access: yesFrontiers in Ecology and Evolution, 2019
Many young birds die soon after fledging, as they lack the skills to find food and avoid predation. Post-fledging parental care is assumed to assist acquisition of these vital skills. However, we still lack empirical examples examining the length of time
Victoria R. Franks   +8 more
doaj   +1 more source

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