Ameraucana with dark face coloring and no crest

[Wanderson Feitosa]

I bought pure Ameraucana eggs and a female stood out for the dark color of her face and almost without a crest. can someone explain to me why this pattern

 

[sourland]

Cockerel in back, pullet in front - her face will redden when she comes into lay.

 

[Wanderson Feitosa]

coloração da pele da ninharia é muito escura, isso é devido a quê?