Elaine, the MYSTERY BIRD sounds like the bird I reported at 
Artemesia just over a week ago now.  I took a bunch of 
pictures of the resting bird in order to get the head shape 
in a relaxed pose.  I've had various opinions on the 
species: Lesser Scaup (imm. male), Ring-necked Duck, and 
Greater Scaup (that just about covers it, doesn't it?). 
Here's one of the pictures:

http://www.astro.umd.edu/~dcr/xfer/IDs/scaup.jpg

I thought it best matched Lesser Scaup myself, but I'm not 
exactly experienced at these things.  However, I should 
mention that in flight the bird showed very distinct white 
bars on the trailing wing close to the body, which is a 
fieldmark for Lesser Scaup in the Peterson field guide.

Let me know what you think!

D

-- 
Derek C. Richardson, Ph.D. (CANTAB) ________
Astronomy, U Maryland, College Park MD 20742
Tel: Office 301-405-8786 Fax 301-314-9067 __
Home page: http://www.astro.umd.edu/~dcr/ __