Pigeons
pheasant
This question is not very clear.
common winter bird
common winter bird
Eagle is a kind of bird not a name of bird therefore it's a common noun.
Pigeons are everywhere.
The bird with black markings around its eyes is called a common grackle.
In Japanese language, the common word to say 'bird' is 'tori', there could be several variations depending of the kind of bird you are referring to. For instance, if you want to say 'little bird', you can say: 'kotori'.
The Common Raven is the national bird of Bhutan.
Starlings(common black bird with yellow colored beaks), Or Robins.
Yes, the okapi is some kind of bird.
The noun hawk is a singular, common, concrete noun; a word for a type of bird, a word for a thing.