Grey Teal
Anas gracilis

A common small duck (40-48 cm, with the males being larger than females), often found with Chestnut Teals around Sydney. Makes and females are alike and can be told from a female Chestnut Teal by the white cheeks and neck. They are present in New Guinea, New Zealand, other Pacific islands and throughout much of Australia and will travel extensively to search for water.
 

1-2: Royal Botanic Gardens, Sydney, 13/09/2009.