Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Mayhew
1960
Amphispiza bilineata
(Black-throated Sparrow)
1.
April 21
37 mi. E. of 29 Palms, San Bernardino Co., Calif.
Three young birds that were barely able
to fly were seen on a rocky area in
the midst of creoste bush scrub.
Apparently they were just out of
the nest. The parents fluttered about
near-by. None of the young birds
flew more than 50 feet before returning
to the ground and hiding in the
vegetation.