Talon
The zipper is named after the sound it makes when it is opened or closed. The word "zipper" was coined by the B.F. Goodrich Company, who originally used it on their rubber galoshes. The company chose the name because it imitated the noise the fastener makes when it is used.
Razor claw or quick claw.
beak
The claw of an eagle, hawk or any bird of prey is called a talon.
Claws or Talons, depending on the bird
its a talon
talon
Bird claw
A zipper is another name for a zip fastener.
The answer to the hink pink "a bird's foot defect" is "flawed claw." In this wordplay puzzle, "bird's foot" refers to a claw, and "defect" implies a flaw or imperfection. Therefore, the corresponding hink pink answer is "flawed claw."
ykk is the name of the zipper company.