Lawrence's Warbler (hybrid)

Vermivora chrysoptera x cyanoptera (F2 backcross)

ML10746


©
George B. Reynard
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MORRISTOWN
New Jersey, United States
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Latitude and Longitude 40.75, -74.5 Map

Age and Sex
Age not specified, Sex not specified
Sounds
Song
Behaviors
Foraging or Eating
Breeding
Tags
; ;
Playback
Used

Comments

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]. Sound stimulation was (other): PLAYBACK. Other Behaviors: Advertise.

Background Species

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

Technical Information

Recorder
NAGRA III-B
Microphone
Accessories
Parabola 101.6cm (40in)

Archival Information

Cataloged
Digitized
3 May 2002 by Martha Fischer
Edited

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