Red-breasted goose

Description:

All the species of the Branta genus are distinguished by their dark sooty colour, relieved by white, and as a distinction from the grey geese of the genus Anser. Among the species from these two genera, the Red-breasted Goose is the smallest at 53–56 centimetres (21–22 in) in length. This brightly marked species is unmistakable, but can be surprisingly difficult to find amongst Brent Geese. At long distances, the red of the breast tends to look dark, and the broad white stripe on the flank is more evident

Notes:

Photographed at Lagos Zoo. Listed as 'endangered' on Wikipedia.