Prolonged incubation of non-viable eggs in the Bearded Vulture Gypaetus barbatus - Digital Repository of Scientific Institutes

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Prolonged incubation of non-viable eggs in the Bearded Vulture Gypaetus barbatus

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This publication is protected by copyright. Access to its digital version is possible on computer terminals in the institution that shares it.

This publication is protected by copyright. Access to its digital version is possible on computer terminals in the institution that shares it.

Title: Prolonged incubation of non-viable eggs in the Bearded Vulture Gypaetus barbatus

Creator:

Margalida, Antoni ; Bertran, Joan

Date issued/created:

Resource type:

Subtitle:

Inkubowanie martwych jaj u orłosępów brodatych ; Short notes

Contributor:

Museum and Institute of Zoology, Polish Academy of Sciences

Publisher:

Museum and Institute of Zoology, Polish Academy of Sciences

Place of publishing:

Description:

pg(s) 181–184

Type of object:

Journal/Article

Abstract:

We present the frequency and duration of prolonged incubation in the Bearded Vulture and test different hypotheses on the possible adaptive significance of this behaviour. The mean and median prolonged incubation lasted 29 and 25 days respectively (n = 10), i.e., 54% and 46% respectively longer than the average incubation period. There was a negative correlation between the duration of prolonged incubation and the egg-laying date: prolonged incubation lasted longer in earlier clutches than in later ones, and territories with many breeding attempts showed short incubation prolongations. On the other hand, no correlation was found between the duration of prolonged incubation and productivity or breeding success. The results suggest that more experienced birds, which occupy higher quality territories and lay their eggs earlier, prolonged their incubation to a greater extent. Although prolonged incubation may constitute an example of adaptive behaviour, the extensive periods documented in some cases do not appear to support this assumption.

Relation:

Acta Ornithologica

Volume:

Issue:

Start page:

End page:

Detailed Resource Type:

Format:

Resource Identifier:

oai:rcin.org.pl:55613 ; 10.3161/068.041.0204

Source:

MiIZ PAN, call no. P.257 ; MiIZ PAN, call no. P.4568 ; click here to follow the link

Language:

Language of abstract:

Rights:

Rights Reserved - Restricted Access

Terms of use:

Copyright-protected material. Access only on terminals at the Museum and Institute of Zoology of the Polish Academy of Sciences, may be used within the limits of statutory user freedoms.

Digitizing institution:

Museum and Institute of Zoology of the Polish Academy of Sciences

Original in:

Library of the Museum and Institute of Zoology of the Polish Academy of Sciences

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Subject and keywords:

Bearded Vulture Gypaetus barbatus energy constraints prolonged incubation unhatchable eggs birds of prey orłosęp orłosęp brodaty

Object collections:

Last modified:

Aug 8, 2023

In our library since:

Jul 29, 2015

Number of object content downloads / hits:

3

All available object's versions:

https://rcin.org.pl/publication/75810

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Acta Ornithologica
- Acta Ornithologica Musei Zoologici Polonici
- Acta Ornithologica

Edition name	Date
Short notes: Prolonged incubation of non-viable eggs in the Bearded Vulture Gypaetus barbatus / Antoni Margalida & Joan Bertran	Aug 8, 2023

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