Citizen Science
The Second Breeding Bird Atlas of Pennsylvania
After five years of fieldwork by 2,100 volunteers, the second Pennsylvania Breeding Bird Atlas is in print. Marius Doyle reads it slowly.
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Citizen Science
After five years of fieldwork by 2,100 volunteers, the second Pennsylvania Breeding Bird Atlas is in print. Marius Doyle reads it slowly.
Songs
Marius Doyle works through what the literature has measured about the hermit thrush's pitch intervals, which a 2014 study found to align suspiciously with the harmonic series, and what an ear in a Vermont wood actually hears.