25 years ago the sighting of any White Heron in the UK would have been greeted with excitement. While Little Egret is now relatively common, it can sometimes be confused at distance with a much rarer visitor - Great White Egret.
From Great Crested and Red-necked to Slavonian and Black-necked, separating grebes in winter plumage can be challenging. This identification video from the BTO discusses all the features to help identify them with confidence.
Identifying the two large sawbills, Goosander and Red-breasted Merganser, can be pretty straight-forward when confronted with male birds. However, the females, or redheads as they are more often called, can be much more difficult.