Bird Sex Determination

Common birds with sexual dimorphic differences

Bird Species




Brown cere

Blue cere


(natural grey)

Grey cheeks, white bars on tail feathers

Yellow cheeks, no bars


Doesnít sing in the breeding season

Sings in the breeding



Red and blue feathers

Green feathers


Pink iris

Black iris

Princess Parrot

No spatula shape of ninth primary flight feather

Spatula shape of ninth primary flight feather

Sulphur Crested Cockatoo

Reddish-brown iris

Black or brown iris

Zebra Finch

Brown abdominal sides with white dots, grey chest

Pale-coloured abdomen and chest



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