Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
67
Chordeiles acutipennis
Oct.27-Nov.4 Putahaya, 40 km. SE Empalme, 100 feet, Sonora.
in the evenings,
Observed daily in large flights over the
entire region of our camp but in greatest
numbers over or near the lagoon. On
largest numbers were observed on about Nov.
1, when thousands were circling about
in the air and when dense groups could
be seen in all directions.
[Recorded by Van Rossem (1945:115) only as
a summer "visitant" [=resident]
The citation refers to C. minor, not
C. acutipennis]