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Inkubowanie martwych jaj u orłosępów brodatych ; Short notes
Museum and Institute of Zoology, Polish Academy of Sciences
Museum and Institute of Zoology, Polish Academy of Sciences
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.
oai:rcin.org.pl:55613 ; 10.3161/068.041.0204
MiIZ PAN, call no. P.257 ; MiIZ PAN, call no. P.4568 ; click here to follow the link
Rights Reserved - Restricted Access
Museum and Institute of Zoology of the Polish Academy of Sciences
Library of the Museum and Institute of Zoology of the Polish Academy of Sciences
Aug 8, 2023
Jul 29, 2015
3
https://rcin.org.pl./publication/75810
Antor, Ramón J Margalida, Antoni Frey, Hans Heredia, Rafael Lorente, Luis Sesé, José Antonio
Godyń, Zygmunt (1910–1979)
Taczanowski, Władysław (1819–1890)
Pielowski, Zygmunt (1930– )
Galušin, Vladimir Mihajlovič