Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
E. ZIEGLER
1956
WARBLING VIREO (VIREO GILVUS)
MAY 19 WILDCAT CANYON, CONTRA COSTA CO., CALIF
8:30 AM SAW 1 ⬆ ABOUT 25' FT UP IN
[illegible]
IN GROVE PICNIC AREA NEAR TENNIS COURTS
IN TILTON PARK GIVING "WARBLING"
SONG [squiggle] ABOUT 1-2 SEC'S
LONG. WARBLING SHOWED THREE FOLIAGES
OF OAK TREES, WHEN OTHER BIRDS WERE
NEAR OR SOMETIMES AT OTHER TIMES
BIRD GAVE A SCOLONG-LIKE NOTE "CHWHHH"
ABOUT 1/2 SEC LONG SPACED A COUPLE OR
SEC'S APART - LIKE A WEAK SPOTTED
TOWHEE'S "SCHWAH" ROLL.
EVERY 20 SEC'S