Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Marshall , 194
Nephocetes niger
San Juan Id., San Juan Co., Wash.
August 13 At noon, several
nighthawks were in the air
above a coastal knoll ½ way
between Friday Harbor & Cattle Pt.
Also many barn swallows
foraging closer to the ground.
As usual, once would expect
to see swifts with day-
foraging nighthawks. Finally 3 or
4 became invisible high above
the nighthawks but soon returned
to the "Stratosphere".