Lawrence's Warbler (hybrid)
Vermivora chrysoptera x cyanoptera (F2 backcross)
Sound stimulation was (other): PLAYBACK.
George B Reynard
29 May 1960
- 40.75 -74.5
- NAGRA III-B
- Parabola 101.6cm (40in)
NOTES: Strata: SONG PERCH; V. "LAWARENCEI". BIRD RESPONDED TO PLAYBACK BY STOPPING A SERIES OF SONGS AND FLYING OVERHEAD CONTINUING ON TO ONE OF ITS REGULAR PERCHES. THE LAWRENCE SANG FROM BRANCHES OF DEAD TREES, MAKING A CIRCUIT EVERY 10 OR 20 MINUTES, APPARENTLY FEEDING IN BETWEEN TIMES, ALL WITHIN AN AREA LESS THAN 200FT IN DIAMETER. 27 SONGS PHARSES. 3 OF THE VERMIVORA PINUS TYPE. REMAINDER A UNIFORM TRILL. CADENCE APPOXIMATELY 10.3 SECONDS. BAN PASS 1000HZ TO 15000KHZ.
[This is almost exclusively a dry trill that sounds like some components of "Type II" song of either parent species. The three exceptions (2:27, 2:30, and 3:03) are typical of the "beeee buzzzz" song of Vermivora pinus. Quality changed from 2-3 to 2 (wind/hiss increases at 2:05, but otherwise not bad) - CAM - 25 January 2005]