Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
HWOLF
1963
Turdus assimilis
July 21 9 mi. E. Santa Lucia, Sinaloa, Mexico El Batel
Both this species + [illegible] Turdus migratorius occurred here.
Seemed to have very distinct + different habitat preferences.
T. migratorius occupied open pine woods with scattered oaks
+ little understory. T. assimilis occurred in predominantly
oak woods with mixed pines. Understory well developed of
small oaks + shrubs. Also a species of Arbustos.
Call notes of two species are impossible for me to
differentiate.