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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of ornithology 134 (1993), S. 196-199 
    ISSN: 1439-0361
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Summary In 1991 a pair of Great Grey Shrikes (RW) prevents the formation of a Whinchat territory in nest neighbourhood (Fig.). The medium distance of Whinchat-nests to each other was significantly greater, the territories were slightly larger, and the nest were situated closer to the territory boundaries than in 1990 and 1992, the last two results, however, were not significant (Table). Possibly RW affects only bird-species with an exponed behaviour during courtship and territory defence and/or those which lived in low structured (arctic/aride) habitats. Birds living in high structured habitats (woods, busches) or with a hidden way of life could bread successfully in direct neighbourhood to RW.
    Notes: Zusammenfassung Ein Raubwürgerpaar verhinderte die Ansiedlung eines Braunkehlchenpaares in direkter Nestnachbarschaft. Da die Brutpaardichte im Vergleich zu anderen Jahren nahezu konstant blieb, bewirkte das eine Verschiebung der Reviergrenzen und Neststandorte. Signifikant höher war der mittlere Abstand der Braunkehlchen-Nester zueinander; die Territorien waren 1991 tendenziell größer und die Neststandorte lagen näher an den Reviergrenzen als 1990 und 1992. Möglicherweise werden nur solche Vogelarten durch interspezifisches Territorialverhalten der RW beeinflusst, die ein exponiertes Revierverhalten zeigen oder/und in strukturarmen (ariden, arktischen) Biotopen leben. Versteckt und heimisch lebende Vogelarten brüten auch in direkter Nachbarschaft zu RW erfolgreich.
    Type of Medium: Electronic Resource
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