Seed food preferences of granivorous farmland passerines
Seed food preferences of granivorous farmland passerines
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粮田雀形目鸟类对种子食物的偏好
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
Jeremy D. Wilson
中科院分区：
文献类型：
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作者：
A. Perkins;G. Anderson;Jeremy D. Wilson
种皮大的麻雀喜欢吃谷物，而麻雀也吃油腻的种子。目的确定树麻雀、山雀和玉米象的种子食物偏好。方法在两个地点进行了两个冬季的40个种子选择试验。在每个实验中，提供了两种种子类型，并记录了在设定的一段时间内鸟类访问每种类型的次数。在一个地点，树麻雀被设置了颜色环，允许记录每只鸟的选择。此外，还收集了麻雀、黄蜡虫和芦苇的数据。结果5个物种均以谷类为主要食料，小麦和燕麦的取食率高于大麦。麻雀和芦苇也带走了玉米，这是玉米和Yellowhammer避免的。树麻雀的食性很广，选择谷类和油籽，包括向日葵和油菜，但黑麦草种子几乎完全不吃。结论谷物应是农田雀形目鸟类越冬提供种子的关键成分，特别是针对玉米斑潜蝇和黄嘴雀。油性种子，如甘蓝和向日葵，将有利于有更多通用性饮食的物种，包括树麻雀。
Capsule Large buntings prefer cereal grains whilst sparrows also take oily seeds. Aims To determine seed food preferences of Tree Sparrow Passer montanus and Corn Bunting Emberiza calandra. Methods Forty seed choice experiments were conducted at two sites over two winters. In each experiment, two seed types were provided and the number of visits made by birds to each type was recorded over a set period. At one site, Tree Sparrows were colour-ringed, allowing choices made by individual birds to be recorded. Data were also collected for House Sparrow Passer domesticus, Yellowhammer Emberiza citrinella and Reed Bunting E. schoeniclus. Results All five species fed intensively on cereal grain, and wheat and oats were consistently preferred to barley. Sparrows and Reed Buntings also took maize, which was avoided by Corn Bunting and Yellowhammer. Tree Sparrow exhibited a broad diet, selecting cereal grain and oily seeds including sunflower and oilseed rape, but rye-grass seed was almost completely avoided. Conclusion Cereal grain should be a key component of over-winter provision of seed for farmland passerines, especially when targeted at Corn Bunting and Yellowhammer. Oily seeds such as brassicas and sunflower will benefit species with more generalist diets, including Tree Sparrows.