Black-breasted Thrush (Male & Female)

 

Whereas the lower parts are the same colour for both sexes, the upper and middle parts are where they differ. For males, the section spanning from their head to the back of their neck and breast area is black, and the remaining areas at the top are slate gray.

On the other hand, females are gray-brown from their eyes to their tail, and the section from their throat to their breast is a "diffused" shade of buff.