Dichotomous Key/Anseriformes

1

 * Feet
 * Entirely webbed -
 * Not entirely webbed -

2

 * Bill
 * Hooked - ../Anhimidae/
 * Not hooked - Anseranas semipalmata

3: Anatidae

 * Call
 * Whistling - ../Dendrocygninae/
 * Other -