The diet of a declining Red-billed Chough Pyrrhocorax pyrrhocorax population on Islay, Scotland
The diet of a declining Red-billed Chough Pyrrhocorax pyrrhocorax population on Islay, Scotland
复制标题
苏格兰艾雷岛上红嘴山鸦 Pyrrhocorax 种群数量的减少
作者：
F. MacGillivray;G. Gilbert;C. McKay
摘要：本研究对在伊莱岛采集的粪便样本中的红嘴嘴红嘴菌进行了定量研究。沙丘牧场以粪便无脊椎动物和混合牧场以Tipulid幼虫为主要猎物生物量，而Aphodius幼虫在20世纪80年代曾是主要组成部分，但在饮食中却很少。首选食物供应减少的迹象对管理有影响。
ABSTRACT Capsule: We quantify Red-billed Chough Pyrrhocorax pyrrhocorax diet from faecal samples collected on Islay. Dung invertebrates formed the majority of prey biomass in dune pasture and Tipulid larvae in mixed pasture but Aphodius larvae were scarce in the diet, whereas they had been a major component in the 1980s. There are management implications from the indication of a reduction in availability of preferred food.