CIRL BUNTING. 159 
never shows any trace of yellow, the underparts are not so bright a yellow, 
and are more definitely streaked, and the rump and upper tail-coverts are 
dull olive instead of rich chestnut. Young birds resemble the female, but 
are much duller in colour. In winter the black on the head and throat of 
the male is partially concealed by the pale margins of the feathers, which 
are cast in the following spring. At all ages and in both sexes the Cirl 
Bunting is easily distinguished from its near ally by its olive-green wing- 
coverts and by the dull olive rump and upper tail-coverts. 
