We studied initial dispersal of juvenile black vultures Aegypius monachus from 2010 to 2012 in Castilla-La Mancha (central Spain) by using GPS satellite transmitters. Our aim was to get information about dispersal areas and home ranges and to study possible differences in dispersal behaviour according to sex and marking circumstances (as nestlings or released from care). We found large differences between individuals, especially with respect to dispersal distances and the areas most used during dispersal. However, we found no differences between the areas mostly used and those used by other satellite-tracked individuals from other Iberian populations. Furthermore, we did not find significant differences for home ranges or dispersal distances related to sex or marking circumstances (nestling / released). Birds marked as nestlings used different areas from those used by released birds. Juveniles usually remained close to the main breeding areas. Finally, survival rates were very high both during the first year (0.92) and second year (0.70). Five birds were found dead up to July 2014, three of which had been poisoned.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 62 • No. 2