银鸥幼雏（Larus argentatus）的颅骨畸形。
Skull deformity in a herring gull chick (Larus argentatus).
作者信息
Threlfall W, Roy N A
机构信息
Department of Biology, Memorial University of Newfoundland, St. John's, Canada.
出版信息
J Wildl Dis. 1988 Jan;24(1):133-6. doi: 10.7589/0090-3558-24.1.133.
PMID:3352082
Abstract
A skull deformity resulting in death of a herring gull chick (Larus argentatus) is described in detail. The bones of the skull and upper jaw were twisted, asymmetrical and of unusual size or absent. The lower jaw had an almost "spoon-like" external appearance and lacked normal articular surfaces.
摘要
详细描述了一只银鸥幼雏（Larus argentatus）因颅骨畸形致死的情况。颅骨和上颌骨扭曲、不对称，大小异常或缺失。下颌外观几乎呈“勺状”，且缺乏正常的关节面。
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