ML 10746

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Lawrence's Warbler (hybrid) -- Vermivora chrysoptera x cyanoptera (F2 backcross) More
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Sound stimulation was (other): PLAYBACK.  

Northern Flicker -- Colaptes auratus
Gray Catbird -- Dumetella carolinensis
Wood Thrush -- Hylocichla mustelina
Northern Mockingbird -- Mimus polyglottos
Rose-breasted Grosbeak -- Pheucticus ludovicianus
Eastern Towhee -- Pipilo erythrophthalmus
European Starling -- Sturnus vulgaris
Brown Thrasher -- Toxostoma rufum
American Robin -- Turdus migratorius

George B Reynard
29 May 1960 at 10:00

    Geography
  • United States
    New Jersey
    Locality
  • MORRISTOWN
    Latitude/Longitude
  • 40.75   -74.5
    Channels
  • Mono
    Sampling Rate
    Bit Depth
    Recorders
  • NAGRA III-B
    Microphones
    Accessories
  • Parabola 101.6cm (40in)
    Equipment Note

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]

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