[Tweeters] Glaucous-w. X Western Gull (hybrid)
leschwitters at me.com
Wed Jan 6 16:17:28 PST 2016
Anyone care to offer an educated guess as what the percentage of Glaucous-winged X Western Gull (Olympic Gull) would be expected in with 500 Glaucous-winged at the Marysville sewage lagoon this time of year?
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