John,
Large rafts (tens of thousands at least) of Red-breasted Mergansers have
always been a feature of August through October off the tip of Pt. Pelee,
Ontario. I wonder if the numbers there are decreasing as well, or if perhaps
the species is lingering more at the northern end of the lake than the
southern end these days?
Allen T. Chartier
amazilia1(at)comcast.net
Inkster, Michigan, USA
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