ACES Morning Birding at Hallam Lake 04/02/24


Rebecca Weiss

April 3, 2024

ACES Morning Birding at Hallam Lake 04/02/24

Tuesday, April 2, 2024, 8:00-11:00am
Weather: Sunny
Location: Hallam Lake and Rio Grande Trail, Aspen, CO

The morning began with a mixed flock of crows, magpies, and one raven that were mobbing something in the forest over ACES’ entrance by the stone pillars where Morning Birding meets. Upon searching the trees, Liz spotted the Cooper’s hawk that was perched on a horizontal branch, eating prey. The crowd of birds kept up their alarm calling, joined by a couple of robins, until the hawk flew off with the rest of its meal in its talons. We had a great opportunity to study the hawk through scopes, noting its field marks and behavior. We lingered to try to see where the hawk went, but were unable to find it again. Ospreys, Great blue herons, Song sparrows, and woodpeckers kept us alert as they flew overhead or called from the surroundings. We then spent time in the Hallam Lake preserve where we observed nuthatches, chickadees, and Pine siskins at the feeders, and an assortment of waterfowl and waterbirds on the lake. An interesting highlight was coming across some duck wing feathers by the trail and a lot of downy feathers under a nearby spruce tree – a male mallard had been a meal for a predator there. We studied the feathers and discussed their various shapes, iridescence, plumes, and purposes. We also found the curly talk feather! Join us for the next upcoming Morning Biding outing on May 7th at Hallam Lake!
Canada Goose
Gadwall
Ring-necked Duck
Mallard
Pied-billed Grebe
Band-tailed Pigeon
Great Blue Heron
Osprey
Cooper’s Hawk
Hairy Woodpecker
Northern Flicker
Black-billed Magpie
American Crow
Common Raven
Black-capped Chickadee
Mountain Chickadee
White-breasted Nuthatch
Pygmy Nuthatch
American Robin
House Finch
Pine Siskin
Song Sparrow
Dark-eyed Junco
Red-winged Blackbird

~ Rebecca Weiss, ACES Bird Guide

Featured photo: Pied-billed grebe.

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