Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Marshall (1942)
Tyrannus verticalis
Mt. Cacagudjine - small groups - not flocks
Lake Oloromega - middle of February
1 day a flock of about 20
came to a tall live tree
at camp.
Do not fly &
pereh close together as do
warblings.
Volcan de Santa Ana loose flocks or
individuals noted daily flying
to top dead snags on denuded area
S slope Cerrc de los Naranjos -
Chilata Sm. Loose flocks occasionally
seen.
Not seeing - only single
call heard.