During the breeding season, how does the male Red-billed Quelea's plumage change?

Answer

It grows a bright yellow crown and a striking black face

During the breeding season, the male undergoes a visible transformation, developing a bright yellow crown and a striking black face that contrasts with its pale breast and back.

During the breeding season, how does the male Red-billed Quelea's plumage change?
birdanimalweaver