Still had 12 warbler species Saturday morning in Sherburne NWR. Best area
was Mahnomen Trail (even though I only walked the first third before
checking out to watch the Badgers game).
The mix was surprising - Northern Waterthrushes and Golden-winged (think of
these two as early departures) - with first Orange-crowned of season - yet
no Yellow-rumpeds (they'll swamp here soon enough).
Good birding to all!
Al Schirmacher
Princeton, MN
Mille Lacs & Sherburne Counties
PS Regarding recordings, this was my first opportunity to see a mobbing
track in action; understand they're commonly used for species surveys and
other applications in Minnesota. Very effective! The use was intentionally
limited. Thanks for the input.
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