Distinctive
to the species are chestnut sides in most plumages with males
exhibiting a yellow crown and white cheek.
The
first spring male has black parts that are lighter on the face and
the chestnut is not as extended.
HY
Male
ASY
Female
The
cheeks are grey and the chestnut is reduced.
In
spring adult females, the chestnut is reduced as compared to the
adult male and the supercillium and subocular crescents are not
as bold as they are in the male.
