Intraguild Predation by Eurasian Eagle-Owl Bubo bubo on Booted Eagle Aquila pennata and Long-Legged Buzzard Buteo rufinus

IF 0.8 4区 生物学 Q3 ORNITHOLOGY Acta Ornithologica Pub Date : 2023-06-14 DOI:10.3161/00016454AO2022.57.2.010
A. Sándor
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Abstract

Abstract. In August 2018 remains of several birds of prey were recorded at one Eagle Owl Bubo bubo eyrie in southeast Romania. Among these, still articulated wings and leg bones of an adult female Booted Eagle Aquila pennata, feathers and several bone fragments of one adult Long-legged Buzzard Buteo rufinus and several individuals of Common Buzzards Buteo buteo were identified. While predation of Eagle Owls on different raptor species is well known, booted Eagles and Long-legged Buzzards are rarely preyed upon. Based on changes that occurred in the overall diet of owls at this particular eyrie, it is hypothesized that a shortage in the main prey species (induced by land use changes in the region) may be the cause of these extraordinary predation events. While predation of Eagle Owls on large diurnal raptors is more an exception than a norm, in areas where threatened diurnal raptors breed, the presence of Eagle Owls may cause conservation concerns/prove to be problematic.
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欧亚鹰鸮Bubo Bubo捕食靴鹰Aquila pennata和长腿秃鹰Buteo rufinus
摘要2018年8月,在罗马尼亚东南部的一只鹰鸮Bubo Bubo eyrie发现了几只猛禽的遗骸。其中,发现了一只成年雌性靴鹰Aquila pennata的仍有关节的翅膀和腿骨,一只成年长腿蟾蜍和几只普通蟾蜍的羽毛和几块骨头碎片。虽然鹰鸮对不同猛禽物种的捕食是众所周知的,但有蹄鹰和长腿蟾蜍很少被捕食。根据这一特定巢穴猫头鹰整体饮食的变化,假设主要猎物物种的短缺(由该地区土地利用的变化引起)可能是这些异常捕食事件的原因。虽然鹰鸮对大型日间猛禽的捕食与其说是一种常态,不如说是一个例外,但在受威胁的日间猛禽繁殖的地区,鹰鸮的存在可能会引起保护问题/被证明是有问题的。
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来源期刊
Acta Ornithologica
Acta Ornithologica 生物-鸟类学
CiteScore
2.10
自引率
0.00%
发文量
14
审稿时长
>12 weeks
期刊介绍: Publishes scientific papers (original research reports, reviews, short notes, etc.) and announcements from all fields of ornithology. All manuscripts are peer-reviewed. Established in 1933 as Acta Ornithologica Musei Zoologici Polonici, since 1953 continued under the present title. Published twice a year by the Natura Optima Dux Foundation under the auspices of the Museum and Institute of Zoology, Polish Academy of Sciences.
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