Tufted Duck (Aythya fuligula)
As our most numerous diving duck, A. fuligula has rapidly expanded its population nationally since the late 19th century, in part helped by the colonisation of the UK by the invasive and non-native Zebra Mussel (Dreissena polymorpha). A. fuligula is particularly adept at exploiting this mollusc as a food resource and it forms their staple diet where it occurs. Males are depicted below.
The low winter light, combined with the reflection of bankside vegetation, providing excellent opportunities for images on a golden pond ...
Cowser, R., 2014. Tufted Duck. The Birds of Sussex. Thetford: British Trust for Ornithology (BTO) Books on behalf of the Sussex Ornithological Society, pp. 120-121.
Kalaher, M., 1996. Tufted Duck. Birds of Sussex. Sussex Ornithological Society, pp. 171-172.