The cirl bunting (Emberiza cirlus) is a European and Asian bird very similar to the yellow hammer with the exception of its black chin and throat and its dislike of cold. Research Cirl Bunting
The yellow hammer or yellow bunting (Emberiza citrinella) is a British and north European species of bunting. The birds are about sixteen centimetres long, the general colouring mottled brown above and yellow below, the head being yellow, streaked with brown, and the rump and tail coverts chestnut. The food is chiefly insects and fruits, especially blackberries in autumn. The nest is placed usually upon the ground and contains four or five eggs. Research Yellow Hammer
 
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Matt and Leela Probert