Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
Ptelka
1943
Chordeiles minor
June 21 2 mi E Hayfork, 2400 ft., Trinity Co., Calif.
One heard at about 5 a. m. flying near camp and apparently just passing by. I was awakened by the note and heard it several times, Miller also heard it.