Andy Trowbridge / Grey teal (Anas gracilis) perched on branch. Ashley River, Canterbury, New Zealand. July.

Andy Trowbridge / Adult Grey teal (Anas gracilis) perched on branch, its bright red eye suggest that this is a male. Christchurch, New Zealand. May.

Brent Stephenson / A spring of Grey teal (Anas gracilis) perching on a log on the edge of a pond. Included in the photo are from left to right, a juvenile, an adult, and two immatures. Te Awanga Lagoon, Hawkes Bay, New...

Brent Stephenson / Adult Grey teal (Anas gracilis) closeup showing the bright red eye, suggestive that this bird is a male. Te Awanga Lagoon, Hawkes Bay, New Zealand, September.

Brent Stephenson / Small group of Grey teal (Anas gracilis) in flight showing the distinctive wing pattern. Otaki, Wellington, New Zealand, August.

Tui De Roy / Grey Teal (Anas gibberifrons gracilis) captive. Otorohanga Breeding Facility, New Zealand.

E.J. Peiker / Grey Teal (Anas gracilis), New Zealand

E.J. Peiker / Grey Teal (Anas gracilis) pair, New Zealand

Brent Stephenson / Grey Teal (Anas gracilis) swimming. Te Awanga Lagoon, Hawkes Bay, New Zealand, September.

Rod Williams / Australian / New Zealand grey teal {Anas gracilis}, possibly a hybrid. Male, captive, from SE Asia and Australasia.

Doug Gimesy / Coalition Against Duck Shooting (CADS) protestor holding a dead Grey teal duck (Anas gracilis). As part of an annual protest against Victoria's duck season, rows of illegally shot threatened species,...

Doug Gimesy / As part of an annual protest against Victoria's duck season, rows of illegally shot threatened species, protected species, as well as game species that duck shooters left dead or dying in the water ar...