A male in summer is a yellow bird with a black patch on its forehead, with black wings and tail and white on the wings and rump. In winter he looks much like the female: a dull olive yellow with brownish wings. The male has a bright orange bill, while the female’s is, again, a…
A male in summer is a yellow bird with a black patch on its forehead, with black wings and tail and white on the wings and rump. In winter he looks much like the female: a dull olive yellow with brownish wings. The male has a bright orange bill, while the female’s is, again, a…