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Legefolge und asynchrones Schlüpfen bei Tannen- und Blaumeise (Parus ater,P. caeruleus)

Laying sequence and hatching asynchrony in Coal and Blue Tit (Parus ater,P. caeruleus)

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Zusammenfassung

Untersuchungen über den Zusammenhang zwischen Legefolge der Eier und Schlüpffolge der Jungen von Tannen- und Blaumeisen erbrachten für die beobachteten Bruten starke Korrelationen für alle Eier eines Geleges. Die biologische Bedeutung des asynchronen Schlüpfens von Meisen ist noch nicht eindeutig geklärt, weitere Studien erscheinen angebracht.

Summary

During a long-term study at the Alpenzoo Innsbruck/Tyrol on behaviour and ecology of tits (Parus) selected broods of Coal and Blue Tit were thoroughly checked during the hatching period in 1988 and 1989. The exact sequence of hatching could be determined by two nest controls per hour. Highly significant correlations between sequence of laying and hatching could be found within the whole clutch. The consequences of this laying-dependent hatching asynchrony are not yet fully understood, although as much as eight hypothesis try to explain its biological significance. Further investigations, both long-term and experimental studies, will be necessary to understand adaptive strategies in tits.

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Föger, M. Legefolge und asynchrones Schlüpfen bei Tannen- und Blaumeise (Parus ater,P. caeruleus). J Ornithol 134, 95–99 (1993). https://doi.org/10.1007/BF01661138

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