Great Black-backed Gull, Chatfield (Douglas)
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Glenn Walbek
Sep 9, 2018, 7:14:58 PM9/9/18
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Yesterday, I found a 3rd cycle Great Black-backed Gull at the Chatfield marina sandspit. Photos from Joey's DFO trip confirm this. GBBG is a rare bird at Chatfield any time of year, but September 8 is exceptionally early for Colorado!
Glenn Walbek
Castle Rock, CO
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