The Probert Encyclopaedia of Nature

ANATINAE

Anatinae is the duck, Wigeon, Teal and Sheldrake sub-family of birds of the family Anatidae. The members of the sub-family are distinguished by a bill of equal width throughout, or broader at the top than at the base, of about the same length as the head; short legs placed behind the middle of the body; the hind toe being without a pendent membrane; and a somewhat round tarsi.
Research Anatinae