Why Are Red-breasted Nuthatches Irrupting?
10,000 Birds
OCTOBER 1, 2012
Check out this graph adapted from eBird that shows the frequency of sightings in the United States in 2012 – Red-breasted Nuthatches are showing up on birders’ checklists just over sixteen percent of the time! Remember that friend of mine that saw 17 breeding pairs of Snowy Owls in a single valley? Thank a pine cone.
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