Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
35
EL WOLF
1964
Aimophila cassini
July 3
Welder Wildlife Foundation, San Patricio Co., Texas
flushed one again wit flew 50+ yds. to dead hackberry & NE within is same perch used by P#2 at 06:31. P#2 sang + P#5 followed with perched chitter song. Then dropped down to ground to W amidst chip series from other members of group.
with song chips
06:54- flushed bird from base of perch #5 - in rel. tree area around running mosquito - flew 80+ yds to W fatten #5. P#2 song flight for much #12 which bird perched on way to #5.
06:55-07:05. 30 songs in 10 minutes. 3/min.
all flight fl(12-12), f1(12-3), f1(3-3), f1(3-3), f1(3-3), f1(3-3), f1(3-3), f1(3-3), f1(3-3), fl(3-3), f1(3-3), f1(3-3), f1(3-3), f1(3-3), f1(3-3), f1(3-3), f1(3-3), f1(3+3), f1(3+-3), f1(3-3), fl(3-3), fl(3-3). members in parenthesis are perch members - first number is perch from which flight song started + 2nd 'c' where ended. a plus (+) sign means close to usual perch at that location, but not in same bush.
07:10-07:22 duration of song flights in sec. (stopwatch):
3+ground
?, 5.0, 5.0, 4.2, 6.2), ?, 5.0, perch, pick, 4.4, 4.6, 4.9, p, 5.0, 4.9, 5.0, 5.0,
short
shotground +63
4.6, 4.4, 4.4, 4.9, p, 4.9, 6.0 , ?, 4.2, 4.5, 5.0, 4.9, 7.7, 4.6, 5.0, 5.0, 4.6, &.3
3.5/min
in 10 minutes of active singing sang 35 songs. ~12% perch songs.
the 4.4 recording marked shot was only a part song. Bird went up but not to usual height + then dove back to perch. Just after reaching perch (not exposed position) Three Scissor-tailed Flycatchers flew past perch going to SW. Flying at about 5-7 feet just over tops of hylaea shrubs. Wind began noticeable during this time period at 3-5 mph & slightly gusty.
interspecific