Question

some birds are not fly becaus

Answer 1

heya________________________________________________________

HERE UR ANSWER.

Flightless birds are birds that through evolution lost the ability to fly. There are over 60 extant species including the well known ratites (ostrich, emu, cassowary, rhea and kiwi) and penguins.

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Answer 2

☜☆☞ hey friend!!! ☜☆☞

here is your answer ☞
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if their wingspan and/or breast muscles are not great enough to create the lift needed they will not be able to fly.

hope it will help you

Devil_king ▄︻̷̿┻̿═━一