Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Marshall (1942)
Stelgidopteryx ruficollis
ctulata locomotion (as described
in Zool. 113 notes) and (as in
Warner '70 notes) their
striking habits in foraging ie:
same circuit time after
time & identical for both
birds.