Date: 4/7/17 12:17 pm From: Mike Patterson <celata...> Subject: [obol] RBA: Slaty-backed Gull at Wireless Rd this morning
The wind was pretty stiff this morning and that brought gulls to Wireless Rd. The numbers were no as overwhelming as they can be when the Mew Gulls take over, but there were still about 1000 gulls in the pastures.
On the west side of the long stretch, I saw a very dark adult gull the mantle was that indescribably dark, dark gray, obviously much darker than any of the Western Gulls around it. It had a pale eye with a hint of a dark "angry bird" eye streak, but otherwise showed no head streaking.
I watched first with binoculars and then my scope for several minutes while it feed with other birds. It them flew. I very clearly saw a double row of white terminal and subterminal spots that was quite striking and would not be expected on a Western Gull. The bird was too far away to see details like leg color or bill shape.
The bird appeared to fly to a part of the pasture that is nearly impossible to see into. I spent an additional hour sorting through gulls hoping it might reappear in a spot where I might get a photo to no avail.