Re: mantle color of ? Kelp Gull

Elliot Kirschbaum (ekirschb@bcpl.net)
Thu, 18 Feb 1999 11:09:21 -0500


On 2/18/99 10:03 AM S. Harvey Mudd, MD said

> Neither Marion nor I were
>able to convince ourselves that we could be sure there was a constant
>distinguishable difference in the dark tones of the upper parts of the two.

We must have been looking at different Great Black-backeds. The 
difference was distinct in the birds I compared, also with the same 
lighting, and facing the same direction. A birder from Calvert County, 
who was there at the same time I was, made the same comparison, and also 
thought that the Kelp(?) Gull was a darker, crisper black.


Elliot Kirschbaum
Baltimore, MD USA
mailto:ekirschb@bcpl.net