The origin
of most European records of Ross's Geese is uncertain. They are certainly a
potential vagrant from North America but the situation is complicated by
escapes from captivity, some of which are now breeding ferally in the UK.
The winter
of 2003/2004 saw at least three individuals amongst the flocks of Pink-footed
Geese wintering in Norfolk. At least one of these was an escaped bird since it
bore a plastic ring, however this bird spent most of its time with feral
Greylag Geese and was only occasionally seen with the Pink-foot flocks.
The other
two were probably wild vagrants, but it is impossible to be certain. One of
them had also been present during the previous two winters; when it first
arrived in autumn 2001 it was aged as a first-winter, strengthening the case
for it being a wild vagrant. Since then one or two Ross's Geese have been
present nearly every winter and in 2007/2008 up to five potentially wild birds
were reported, as well as one or two presumed escaped birds still knocking
around.
The first
few photos below are birds in wild goose flocks which may well be wild
vagrants; then follow birds preferring the company of feral Barnacle Geese and
these are most likely to be feral.
