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Association of Scissor-Tailed Flycatchers (Tyrannus forficatus) With Specific Land-Cover Types In South-Central Texas

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  • معلومة اضافية
    • بيانات النشر:
      Wilson Ornithological Society, 2013.
    • الموضوع:
      2013
    • نبذة مختصرة :
      Scissor-tailed Flycatchers (Tyrannus forficatus) are insectivorous Neotropical migrants that breed in the south-central United States. We examined their fine-scale (circles 300 m in radius centered on observed flycatcher locations) associations with different land cover types in south-central Texas. Scissor-tailed Flycatchers use a sit-and-scan foraging strategy; therefore, we expected the species would be positively associated with open land cover types (vegetation with little or no canopy) such as grassland, pasture/hayfield and cropland, and negatively associated with forest and shrubland given that the latter could obstruct visual scanning. We conducted 44 surveys from 9 May 2011 to 15 December 2011 by slowly driving (30 km/h) rural roads throughout 15 counties in south-central Texas and 3 near the coast of the Gulf of Mexico. Using ArcGIS, we quantified the percent cover of four general land cover types (urban/developed land, forest/shrub, grassland/pasture/hay, and cropland) within 300 m of...
    • ISSN:
      1938-5447
      1559-4491
    • الرقم المعرف:
      10.1676/12-096.1
    • الرقم المعرف:
      edsair.doi...........0946922384fd0d0eabbddb92914793a9