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Glaucous-winged Gull at Highline Lake

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  • Ron Lambeth
    This late afternoon, Monday, Highline Lake, NW Mesa County, was bereft of birds, except for an osprey that really spends more time over Mack Mesa Reservoir and
    Message 1 of 1 , Oct 5, 2009
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      This late afternoon, Monday, Highline Lake, NW Mesa County, was bereft of birds, except for an osprey that really spends more time over Mack Mesa Reservoir and a gull.  The gull looks something between the 2nd year glaucous-winged gull in Peterson's Field Guide to North American Birds (p. 199) and the immature glaucous-winged gull on water in Kaufman's Birds of North America (p. 75 in the 2000 edition).  Eye color, subtle eye line, tail, general paleness...    However, the primary tips had thin white trim and only the greater coverts were more brownish than grayish.  Only the lower mandible has noticeable pale pink at the base.  The nail of the black or dark upper mandible is fearsome long, like a raptor's.  The rather skittish bird was hanging out on the swimming beach and occasionally flying up and down the reservoir.  It'd be nice if others would find it.

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