What is the defining characteristic of the male Bullfinch's plumage?

Answer

Vivid, rosy-pink breast contrasting with a black cap

The male Bullfinch is instantly recognizable due to its exceptionally vivid, rosy-pink breast, which sharply contrasts with its black cap and grey back.

What is the defining characteristic of the male Bullfinch's plumage?
raritybirdornithologywildlifeBullfinch