Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
R.K.Selander,
1952
Catostophorus semipalmatus
Aug. 22 Pie de la Cuesta, 20 ft., Guerrero, Mexico - a lone bird of this species flying [illegible] along the edge of the beach about 50 feet above the breakers. Identification positive. Bird silent.
Aug. 29 3 flying south along the beach, just above the breakers.