This morning in the vicinity of University and Cresthill in Highlands Ranch, I had the pleasure of watching a Swainson's Hawk circling and taking long vertical dives, though never coming within more than 50 feet or so of the ground. Another scan of the field he was above revealed the second hawk, presumably for whom he was conducting this display. The second bird was perched on what looked like a dead tree branch, one of two, that was in fact bolted to a telephone pole, simulating a dead snag. I'd never seen such a prop before, and can only assume that they were attached to the pole for the birds' benefit. Clarification welcome. Dave Cameron Denver
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