a flock of birds. But there are other collective nouns for specific bird. Such as a brood of hens.
If you click on 'related links' below the link will take you to a list of collective nouns for birds.
Bird offspring are commonly called chicks or hatchlings.
the catbird,of the mocking bird group.
The Robin is in the bird group because it is a bird.
Bird group
Because it is a bird
A call bird is a bird which has been taught to call in order to lure other birds into some form of snare.
Bird Technologies Group was created in 1976.
A bird group
The flamingo belongs to the bird group.
the bird group
I can not answer this because i do not think there is such a bird called a fool bird.
== == A group of rooks is called a building, clamor, or storytelling. By the way, a rook is a European crow.