Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Moore
Petrochelidon lunifrons
August 1, 1924
These swallow's nests are found
at the upper edge of the dam, of
Bear Lake 700 ft. San Bernardino
Mts. San Bernardino Co., Calif., under
an overhanging ledge of the dam.
One individual was secured by
going out on the dam at night,
and clamping the hand over its
entrance to the mud nest.