Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
LW014
1964
26
Aimophila cassini
July 1
Welder Wildlife Foundation, San Patricio Co., Texas
0620 - 0623.5 - 10 songs in 3\frac{1}{2} min.
flight - IIII perch - HLL I
changed perches after each flight song - 1st to SE where another
d singing 100+ yds to SE. Then to W, where two d's singing
then quiet for 2nd min while down in grass. Song flight then
to N to perch where first seen (#1) - see map on back.
0626 - 0632 bird quiet. Can hear chipping to E of me.
0632-06\frac{3}{4} perch, perch, perch. Fl. to #4, perch, perch, perch, perch,
perch, perch, perch, perch, flight. Dropped down to SW behind
clump of mesquite - out of sight. Quiet.
06 30 - wind 5-10 mph + rather gusty.
0642 - flight song from W of #4 to 3 yds. ending #4. Then
perch songs HLL IIII to 0646. Then quiet all tho still as perch.
0647 - "" perch song can hear chipping to E. of #1/perch.
0648- d left perch - apparently silent flight to perch #3.
0655- at least 2000 singing west of my d + two singing
cast. S. of his terr. is grassy area with no shrubbery + very
scattered trees. N. looks like good habitat but no birds heard
from there.
habitat
0705 - adult from this territory with food in bill + young in
same stump. Also d painted bunting. Young dropped down toward
ground, ? followed. young flew out to NE followed by ?
which was being chased by the bunting d.
inter-species
0712.5- d gave song from on or near ground. then flew up
to perch #1 giving flight song almost in stall just before landing.