Hi Everyone-- Marcia Marvin and I scoped Chatfield Reservoir from 2 until about 4 this afternoon 9/11. At one point I counted 5 Sabine's Gulls (1 juv, the rest adult basic with gray backs), although usually only 2 or 3 were visible. The adult alternate bird seems to have left, as has the Little Gull. Over at the Denver Botanic Garden at Chatfield (Deer Creek Road), the riparian trail had some migrants, including several non-vocalizing wood-pewees, a Say's Phoebe, a Cassin's Vireo, a Green-tailed Towhee, a Lincoln's Sparrow, a Wilson's Snipe, and a small hummingbird that looked like a juv Calliope, with short bill, wings and tail about the same length, grayish tail base (I couldn't really call it rufous), and white tail tips that were visible when perched. We heard a Gray Catbird and a Passerina sp. (presumably Lazuli Bunting, but Indigo also gives that little buzz that makes me want to say "excuse you").
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