The idea of dividing by two and subtracting an additional 10% for the habitat variation advantage (translation: 45% of Sean's total year yard list) seems like a good starting point. It should keep Sean out there looking more than he is now.
Don't know if you all noticed but the goose invasion Sean experienced recently has spilled over into w. lower Michigan, with one report of 14 Ross's Geese in one flock and at least 2-3 other reports, plus lots of Greater White-fronted Geese and Snow Geese as well. It'd be very nice to score any of those as yard birds! More soon...
Dude, yeah the goose invasion was pretty widespread among observers who actually knew their shit on this side of the lake (ie people who knew where to look/listen). They've really thinned out now though. 2 Cacklers today were the first non-Canadas I'd had in a week anywhere around here. Keep an eye out and check every flock man!
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