Verification of Unusual
Rec. # 2004-35
Lesser Black-backed Gull
|Scientific name:||Larus fuscus|
|Length of time observed:||30 minutes|
|Location:||Farmington Bay WMA|
|Distance to bird:||Varied from 20 to 35 yards|
|Optical equipment:||Pentax 8x42 Binoculars, Pentax 10x42 Binoculars, Bausch & Lomb Discoverer Zoom Scope|
|Light Conditions:||Good. Even with the clouds, we saw the bird well especially because it was so close!|
|Detailed description of bird:||
Size--It was slimmer and smaller than the nearby Herring Gulls. Eyes--It had
obvious yellow irises. There were also dark smudgy markings completely
surrounding the eyes.
Face--The rest of the face was white with very sparse dark streaking. The forehead was white without any streaking.
Bill--It was smaller than the Herring Gulls'. It was dark in color with a discernible but small bit of pale yellow at the base of the lower
Legs--They were a pale (not very bright)yellow color.
Belly and throat--They were both white.
Nape--It was white with sparse dark streaking.
Mantle--It was slate gray with a few brown markings. The gray was obviously darker than the Herring Gulls' mantles.
Wings--The upper wings were dark brown and much darker toward the tips of the wings. The under wings were also dark brown.
Tail--The upper tail coverts were white with a few sparse brown markings. There was a black band near the end of the tail. This band widened
a bit toward the middle of the tail (so it was narrower on the edges of the tail). The black tail band had a narrow white edging on the outer
edges and the tip of the tail. This narrow white edging along the outer edges of the tail had a few dark lines appearing in it which increased and darkened toward the tip of the tail.
|Song or call & method of delivery:|
|Behavior:||Flew low over and then landed in shallow water several times. Standing, feeding, flapping wings without flying, and periodically chasing other nearby birds.|
|Habitat:||Mudflats covered with very shallow water.|
were they eliminated:
Herring Gulls were larger and bulkier.
The 2nd winter Herring Gulls in the vicinity had lighter mantles and pink legs and were lighter under their wings.
this & similar species:
|We've seen several Lesser Black-backed Gulls in Ireland. We also saw one in Texas several years ago. We've seen many Herring Gulls over the years.|
|Description from:||Notes taken at time of sighting|
|Observer:||Kathy and Joel Beyer|
|Observer's address:||1719 Hillcrest Avenue, Salt Lake City, Utah 84106|
|Observer's e-mail address:||
|Other observers who independently identified this bird:|
|Date prepared:||08/12/04 (General Public)|