Bird’s claw regularly in its beak? (5)
I believe the answer is:
macaw
'bird's' is the definition.
(type of parrot)
I can't explain the remainder of the clue.
(Other definitions for macaw that I've seen before include "brilliant winger" , "Largest parrot" , "colourful flyer" , "Large bright parrot" , "Type of parrot" .)