Possible Clues:

• Short of legs, but got wings at last
• Being short in the leg will fly at the last
• Animal beginning to burrow a great hole
• Could one be with a broken leg so as to have one's legs so short?
• With its short legs, if it losesits head it may take to flight
• Small, sturdy breed of hound
• Dog second to bird
• It might be a broken leg that had Darwin carried around in it
• Having little legs, can fly without its head
• Darwin's ship (with ''The'')