I always tell beginning birders to remember their high school yearbooks
when they are trying to identify birds. Every individual in the book is
identifiable as an individual, some very weird (you should see my ears)
yet all are one species. Same with birds. If this GBBG was seen in a
flock of 100 of the same species, would someone have picked it out as a
different species or possible hybrid? I don't think so. It would have
been accepted (if even noticed) as just part of the normal individual
variation in a species. The discussions are excellent and most
enjoyable, but I think this is well within the range of variation for
GBBG.

Bruce Whittington
Victoria, BC
mailto: fieldnat at pacificcoast.net