Great Black-backed Gull
Calvert, 3rd December 2009
pic showing how the G.B.B dwarfs the
L.B.B Gulls.Also how jet black the mantle is compared to the 2 L.B.B which also show two of the different shades of mantle colour they can have.
© Tim Watts
Going birding in Buckinghamshire?
Wooburn Green © Jim Rose