ML 44490

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Lawrence's Warbler (hybrid) -- Vermivora chrysoptera x cyanoptera (F2 backcross) More
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1 Adult  

100%

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Natural
 

song

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Thomas S Schulenberg
28 May 1989 at 06:15

    Geography
  • United States
    Illinois
    Cook County
    Locality
  • Cherry Hill Grove Forest Preserve
    Habitats
  • Forest
  • Deciduous Forest
    Features
  • Edge
No locations found with lat/long
    Channels
  • Mono
    Sampling Rate
    Bit Depth
    Recorders
  • SONY TCM-5000
    Microphones
  • Sennheiser ME 80
    Accessories
    Equipment Note

NOTES: (Species: Vermivora chrysoptera x pinus or V. lawrencei, Lawrence's Warbler; Breeding Status: territorial; General Climate: humid; Copy Recorder: Studer from Nakamichi; Filtering: no) In a "colony" of Blue-winged Warblers and apparently territorial, although not located here by Doug Stotz 1-2 weeks later. Recordings of Blue-wingeds at this location are in LNS 44491-44493. "Lawrence's" is rare in Chicago area, but this is the 3rd consecutive year one has been at this location [see American Birds 41: 440 for photo]. A "classic" "Lawrence's" with olive back, black mask and throat, and yellow breast and belly, but the wing-bars were yellowish. The chin of this bird was also yellow. Some authors believe that a yellow [or, in Golden-winged, white] chin indicates a bird in the first alternate plumage. If this was indeed the same individual three years in a row, however, then chin color may not be strictly age-related.The hybrid was named as V. lawrencii on spp reel[Three "Type I" songs, all of which are typical of Vermivora pinus song ("beeee buzzzz"). Quality added (2-3) - CAM - 26 January 2005]

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