On one of my first visits to Blackwater, maybe 12 years ago, almost all 
the Snow Geese were segregated by color, white vs. blue.  There were 
several hundred of each color morph, but within each flock, there were 
less than 5% of the other color.  The flocks were separated by maybe 1/4 
mile.

Haven't seen anything like that since, at Blackwater or elsewhere.

	Bob Hartman
	Silver Spring/Colesville



Philip Brody wrote:
> A quick drive down Wildlife Drive at Blackwater found very large flights of both 
> Canada Goose and Snow Goose being produced at least partly by harassing 
> eagles. The Snow Geese were mixed white and dark phase blue geese. 
> However, from a photograph of a particular flight -about 100 birds in the frame 
> I count only about 18 white -that is blue geese were about 80% of the birds 
> flying overhead. Does anyone know what is typical of the white-dark 
> distribution of our wintering birds?
> 
> In addition on the water there were considerable but not huge numbers of 
> Tundra Swans. Also, on the north side of the drive as one approaches route 
> 335, there was a pretty collection of Northern Pintail.
> 
> Phil Brody 
> 
>