By Tyler Hoar and Matthew A. Young: As winter's grip relaxes, the snow melts, the sun feels warmer, and Northern Cardinals, American Robins and House Finches are singing their first widespread songs ...
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Irruption Alert: Astonishing Pine Siskin Nocturnal Migration
By Ryan F. Mandelbaum: On Sunday, October 11, Astronomer and Field Ornithologist Timothy Spahr captured sounds almost never heard in recorded history: the raspy call notes of Pine Siskins migrating at ...