Question

bird is which gender​

Answer 1

Answer:

In birds, sex is determined by sex chromosomes, just as in mammals. But unlike mammals, where females are XX and males are XY, female birds are ZW whilst males are ZZ (lots more details here). So the sex chromosome -- either W or Z -- contained in each avian ovum determines the resulting chick's sex.

Answer 2

Answer:

Male bird Xy , female called xx.