What?! That question males no sense! If you are asking can bird siblings mate with each other, the answer is yes.
Most wild animals do but not exclusively
Birds mate after and before making a nest
Yes, all birds mate and have nests at one point or another. The process is different with all birds.
Yes, you can mate the same breed of birds. Some popular breeds of birds that are good to breed include canaries, love birds, and parrots.
Probably, but they wouldn't because birds are instinctively drawn to mate only with their own kind.
Yes. Parrots and swifts can mate in midair.
They atleast have 1 per mate with the father but they mate their own siblings
to reproduce...
Penguins are birds, and do not mate with seals, which are mammals.
They usually do it to call in birds to mate.
They mate like mammals
They imitate the songs of other birds and certain other noises.
All female birds can lay eggs without a mate. However, without a male, the eggs will be infertile and will not hatch.