kill two birds with one stone

In addition to the idioms beginning with bird

• bird has flown, the
• bird in the hand
• bird of passage
• birds and the bees, the
• birds of a feather (flock together)

also see:

• catbird seat
• early bird catches the worm
• eat like a bird
• for the birds
• free as a bird
• kill two birds with one stone
• little bird told me
• naked as a jaybird
• rare bird