Whilst out catching Dippers tonight I caught something a little unexpected!
Mandarin Ducks are quite common on many of the rivers we ring Dippers on nowadays but examining this bird carefully the shape of the spectacle around the eye, the generally darker plumage and the shorter legs all indicated that this wasn't a female Mandarin but a female Wood Duck. Its a very tricky identification problem separating the two but the clincher for me was the male that got out of the net as I was running over to it ( I hope he could tell the difference!)
Whilst I know we can ring Mandarins I wasn't sure of the rules regarding Wood Duck so this one went off without a ring. Will have to check now in case I catch another.