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Fortpflanzungsbiologie der Hauskrähe (Corvus splendens) in Mansehra, Pakistan
Paperback
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ISBN10: 6209339433
ISBN13: 9786209339431
Publisher: Verlag Unser Wissen
Published: Dec 9 2025
Pages: 92
Weight: 0.30
Height: 0.22 Width: 6.00 Depth: 9.00
Language: German
ISBN13: 9786209339431
Publisher: Verlag Unser Wissen
Published: Dec 9 2025
Pages: 92
Weight: 0.30
Height: 0.22 Width: 6.00 Depth: 9.00
Language: German
Die Hauskrähe ist ein Sperlingsvogel, der auf dem Subkontinent lebt und von gro bis mittelgro ist. Die Brutzeit geht von Anfang Juni bis September. Die durchschnittliche Nestdichte der Hauskrähe lag in der Studie bei 2,4 Nester pro Hektar. Sie nisteten auf vier verschiedenen Baumarten, nämlich Melia azedarach, Pinus roxburgii, Platanus orientalis und Populus euphratica. Die durchschnittliche Baumhöhe betrug 14,8 m, die durchschnittliche Nistkorthöhe 11,8 m. Der durchschnittliche maximale Durchmesser der Nester betrug 42,3 cm, der minimale Durchmesser 39,0 cm, die durchschnittliche Tiefe der Nester 19,3 cm. Der maximale Durchmesser der Nistschalen betrug 15,6 cm, der minimale Durchmesser 13,3 cm. Die durchschnittliche Tiefe der Nestmulde betrug 8,3 cm. Das durchschnittliche Gewicht der Nester lag bei 1,4 kg. Die Gelegegrö e betrug 4,0 mit einer Spanne von 1 bis 6 Eiern. Das durchschnittliche Gewicht der Eier lag bei 12,30 g. Die durchschnittliche Länge der Eier betrug 38,6 mm, die Breite 26,0 mm, das berechnete Volumen 13,34 cm3 und der Eierformindex 1,42. Der Bruterfolg lag bei 0,551 (64/116), der Nesterfolg bei 0,690 (29/42) und die Anzahl der erfolgreichen Jungvögel pro Nest bei 1,44. Daraus lässt sich schlie en, dass die Hauskrähe ein Baumnester baut und Bäume mit dichtem Blätterdach und grö erer Höhe für den Nestbau bevorzugt.
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