Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Pelecanus erythrorhynchos.
Oct. 6 Rio Yaqui, on S.P.R.R., Sonora
Large flocks, totalling between 1000 and 1500 observed
circling overhead just north of the river.
A winter visitant,
Not recorded definitely in Sonora south of
Guaymas as earlier than November (van
Rossem, 1945:32).