Food preferences of grey partridge chicks, Perdix perdix, in relation to size, colour and movement of insect prey
Food preferences of grey partridge chicks, Perdix perdix, in relation to size, colour and movement of insect prey
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DOI：
10.1016/j.anbehav.2005.06.017
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发表时间：
2006-04
期刊：
影响因子：
2.5
通讯作者：
S. Moreby;N. Aebischer;S. Southway
中科院分区：
文献类型：
--
作者：
S. Moreby;N. Aebischer;S. Southway
随着农业耕作方式的不断变化，了解许多农田鸟类的小鸡饮食中的无脊椎动物是很重要的，因为它可以帮助它们的栖息地管理和保护。虽然研究已经发现哪些群体在饮食中有代表性，但这并不一定意味着这些项目是首选。为了获得一些理解的基本原则的小鸡的食物的选择，我们喂灰色parabelus小鸡不同的昆虫类群和彩色的食物颗粒，以确定是否偏好与大小，颜色或运动的食物项目。在白色、棕色和绿色背景下进行试验。昆虫类群的总体选择存在显著差异，项目之间的选择概率差异很大。在没有运动的情况下，选择主要受大小和颜色的影响。颜色影响了对相似大小物品的选择，偏好绿色/黄色而不是棕色/黑色，但大小也影响了对最喜欢的颜色的选择。红色最少被选中。对于活昆虫，颜色和大小再次对选择产生了最大的影响，但运动也影响了对较小物品的选择。均匀大小的彩色食物颗粒的选择给出了类似的颜色选择的选择，获得与昆虫。然而，在自然栖息地中，通常为绿色/黄色的较受欢迎的较大项目，如果不动且颜色神秘，则可能更难看到。它们也可能位于植被上，实际上无法获得，从而限制了对较小，通常活跃但不太受欢迎的项目的选择。
With continually changing arable farming practices, knowledge of the invertebrates in the chick diet of many farmland bird species is important, as it can help in their habitat management and conservation. Although studies have found which groups are represented in the diet, this does not necessarily mean these items are preferred. To gain some understanding of the basic principles underlying a chick's choice of food, we fed grey partridge chicks different insect taxa and coloured food pellets to determine whether preference was related to size, colour or movement of the food items. Trials were conducted against white, brown and green backgrounds. There were significant differences in the overall selection of insect taxa, with wide differences in the probability of selection between items. With no movement, choice was primarily influenced by size and colour. Colour influenced selection for similarly sized items, with a preference for green/yellow over brown/black, but size also affected choice within the most preferred colours. Red was least selected. With live insects, colour and size again had the greatest effect on choice, but movement also affected the selection of smaller items. Selection of uniformly sized coloured food pellets gave a similar colour selection choice to that obtained with insects. However, in natural habitats the preferred larger items, generally green/yellow, could be more difficult to see if immobile and cryptically coloured. They might also be located on vegetation and physically unavailable, restricting choice to the smaller, often active, but less preferred items.