模仿文本： 

The name chaffinch refers to its habit of flocking in stubble fields, often in the company of other birds to sort through the chaff for seeds.In less tidy times when spilled grain was a regular feature in farmyards and stubble was retained for longer, these winter flocks were widespread.

苍头燕雀得名于它们的一个习惯。它们喜欢聚集在留茬地里，和其他鸟类一块找寻谷壳中的种子。有时人们收拾得不细心，溢洒的谷物农场里俯拾即是，一段时间内残茬也无人打理，这些冬候鸟会十分普遍。