House Crow (Corvus splendens) Attempt to Cooperatively Kleptoparasitize Western Osprey (Pandion haliaetus)

Reuven Yosef; Assaf Zvuloni; Nufar Yosef-Sukenik

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House Crow (Corvus splendens) Attempt to Cooperatively Kleptoparasitize Western Osprey (Pandion haliaetus)

机译：家鸦（乌鸦座锦绣）试图合作地杀害西方鱼鹰（Pandion haliaetus）

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The House Crow (Corvus splendens) is a bioinvader to the Red Sea region and has been shown to negatively impact indigenous species. We describe attempts by House Crows to acquire an ordinarily inaccessible, high quality food source by mobbing Western Osprey (Pandion haliaetus) in large coordinated groups. The crows mobbed perched Osprey that had successfully caught fish in 176 observed attempts to steal the otherwise inaccessible food source. However, crows succeeded in forcing Osprey to abandon fish on only seven occasions (～4%). The crows then jointly fed on the abandoned fish. The consistency in mobbing Osprey and the low rate of success suggests House Crows are aware of the energetic value of fish.

机译：乌鸦（Corvus splendens）是红海地区的生物入侵者，并且已证明会对土著物种产生负面影响。我们描述了家养乌鸦试图通过在大型协作组中围攻西部鱼鹰（Pandion haliaetus）来获取通常无法获得的优质食品的尝试。乌鸦围捕了栖息在176种鱼中的鱼鹰，观察到它们企图偷走原本无法获得的食物。但是，乌鸦仅成功强迫白鹭鱼弃鱼七次（约4％）。然后，乌鸦共同喂食废弃的鱼。围攻鱼鹰的成功率和成功率均较低，这表明家鸦公司意识到鱼类的活力价值。

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《The wilson journal of ornithology》 |2012年第2期|p.406-408|共3页
作者
Reuven Yosef; Assaf Zvuloni; Nufar Yosef-Sukenik;
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作者单位

Ben Gurion University at Eilat, P. O. Box 272, Eilat, Israel;

Israel Nature and Parks Authority, P. O. Box 667, Eilat, Israel;

Department of Education, Tel Aviv University, Ramat Aviv, Israel;

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House Crow (Corvus splendens) Attempt to Cooperatively Kleptoparasitize Western Osprey (Pandion haliaetus)

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