Results 61 to 70 of about 11,765,015 (192)

The post-fledging dependence period in the Lesser Kestrel Falcon naumanni

, 2012
We studied the post-fledging dependence period of individually marked lesser kestrels (Falco naumanni) in southwestern Spain. Chicks fledged at a mean age of 37 d and remained at the breeding colony, depending on their parents for food, on average 5 d more. Parents declined food provisioning to offspring during the post-fledging dependence period.
Bustamante, Javier, Negro, Juan J.
openaire   +1 more source

Variation in forest area influences post‐fledging development and dispersal onset in the Eurasian Goshawk (Astur gentilis)

Ibis, EarlyView.
Natal dispersal is a key ecological process influencing gene flow, population connectivity and individual fitness. In altricial birds, the transition from fledging to natal dispersal is mediated by the post‐fledging dependence period, which is often difficult to observe in elusive, forest‐dwelling species.
Elouise Mayall, Thomas Bodey, Paul Caplat, David Anderson, D. Philip Whitfield, Xavier Lambin   +5 more
wiley   +1 more source

Using juvenile movements as a proxy for adult habitat and space use in long‐lived territorial species: a case study on the golden eagle

Journal of Avian Biology
Effective conservation management of wildlife species depends on understanding their space and habitat use. Telemetry has become the primary source of data for information on how species use space and habitats.
Arzhela Hemery, Olivier Duriez, Christian Itty, Pierre‐Yves Henry, Aurélien Besnard   +4 more
doaj   +1 more source

Trans‐oceanic migration and wind utilization by Amur Falcons (Falco amurensis)

Ibis, EarlyView.
The Amur Falcon Falco amurensis performs one of the world's longest raptor migrations, involving a non‐stop crossing of the Indian Ocean of approximately 2800 km. While the existence of this route is known, the mechanistic details of wind exploitation and seasonal navigation remain to be fully elucidated.
Bernd‐Ulrich Meyburg, Rina Pretorius, Daniel Holte, Photos by B.‐U. Meyburg   +3 more
wiley   +1 more source

Factors affecting the length of the post-fledging period in the Bonelli's Eagle Hieraaetus fasciatus

, 2013
We investigated factors associated with the length of the post-fledging dependence period in 28 radio-tagged young Bonelli's Eagles Hieraaetus fasciatus monitored from 1998 to 2000.
Ferrer, Miguel, Balbontín, Javier
core  

Growth, fledging success and post-fledging survival of juvenile oystercatchers Haematopus ostralegus

, 1995
We studied the consequences of differences in growth rate on the subsequent survival of Oystercatcher Haematopus ostralegus chicks. Fledging success increased sharply with growth rate, from zero in chicks growing at less than 6 g per day to about 85% in ...
ALEX BRENNINKMEIJER, Brenninkmeijer, Alex, MARCEL KERSTEN, Brenninkmeijer, A., Kersten, M., Kersten, Marcel   +5 more
core   +1 more source

The demography of an Osprey population under natural recolonisation and translocation processes

Ibis, EarlyView.
In a context of global biodiversity loss, studying the processes underlying the recolonisation—whether natural or assisted—of expanding species provides essential insights for the development of effective conservation strategies. Since the 1980s, the Osprey Pandion haliaetus has naturally recolonized mainland central and eastern France, increasing from
Marie Thalhammer, Rolf Wahl, Paul Lesclaux, Ségolène Faust, Clément Ganier, Christophe Barbraud, Olivier Duriez   +6 more
wiley   +1 more source

A global perspective on the annual cycles of whimbrels

Ibis, EarlyView.
Comparative analyses are central to understanding broad‐scale patterns in avian ecology, yet their application is often constrained by fragmented and uneven data availability. Recent advances in tracking technology have generated unprecedented insights into shorebird movements, resulting in numerous studies on single populations or flyways.
Camilo Carneiro, Tómas G. Gunnarsson, Gary Allport, Philip W. Atkinson, Anne N. M. A. Ausems, Pierrick Bocher, Roeland Bom, Malo Braquier, Stephen C. Brown, Sayam U. Chowdhury, Paula Cimprich, Delip K. Das, Charlotte Francesiaz, Robert E. Gill, Diana J. Hamilton, Maina C. Handmaker, Shariful Islam, Audrey Jaeger, Frédéric Jiguet, Chrystyn Jones, Emmanuel Joyeux, Jeffrey F. Kelly, Alan H. Kneidel, Fenliang Kuang, Chris Latty, Mathieu Le Corre, David Li, Rebeca C. Linhart, Ádám Lovas‐Kiss, Zhijun Ma, Scott McWilliams, Verónica Méndez, Jason Mobley, Samuel NG, Joshua Nightingale, Erica Nol, Julie Paquet, Theunis Piersma, Marie Pitts, Rivo Rabarisoa, Florinah Razafimandimby, Daniel R. Ruthrauff, Felicia Sanders, Shiloh Schulte, Philipp Schwemmer, Nathan R. Senner, Böðvar Þórisson, Lee Tibbitts, Nils Warnock, Bryan Watts, Brad Winn, Samantha J. Wolfe, Shufen Yang, José A. Alves   +53 more
wiley   +1 more source

Habitat distribution during the post-breeding and post-fledging period in the Reed Warbler Acrocephalus scirpaceus and Sedge Warbler A. schoenobaenus depends on food abundance

Ornis Svecica, 1998
Habitat selection in Reed and Sedge Warblers in late summer and autumn was studied on the basis of trapping in several sites along the Courish Spit. The study revealed that during the period of post-breeding and post-fledging movements birds, especially juveniles, were strongly associated with patches where their preferred food, plum aphids, was most ...
openaire   +1 more source

Not all crickets are equal: selective shrike predation highlights the conservation value of diverse arthropod communities to grassland birds

Ibis, EarlyView.
Understanding dietary preferences and prey selection is pivotal for interpreting the ecology and conservation needs of threatened species. We investigated the diet composition and prey selection of the Red‐backed Shrike Lanius collurio in a montane grassland of the central Italian Apennines, with special regard to sex‐related differences and the ...
Leonardo Ancillotto, Sauro Giannerini, Matteo Bianchi, Giulia Santalmasi, Marco Zaccaroni, Tommaso Lipparelli, Matteo Annessi, Jacopo Martino, Emiliano Mori   +8 more
wiley   +1 more source