Trumpeter Swan
Cygnus buccinator
First breeding of this North American species, never recorded wild in Europe, reported near local wildfowl collection in Northamptonshire in 1997.
Ogilvie, M.A. & RBBP 1999 British Birds: 92, 176-182 & 472-476.
From The State of the Nations Birds
Copyright © 2000 by Chris Mead