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FIGURE 1. Lewis' Woodpecker study area at King's Center. Numbered circles represent mature cottonwoods; corn kernels were stored in 1N, 1M, 1S, 2,4; NCL is a clump of immature locusts; HM is an unused hay mill.
FIGURE 2. King's Center photographed from the NE at a location corresponding to the upper right-hand corner of fig. 1.
FIGURE 3. Foothills study area at Branstine's. Open circles represent storage sites of Asyndesmus during the winter of 1969-70; solid circles represent unused mature cottonwoods. A fence (light solid line) delimits a garden containing four clumps of Gambel's oaks (solid clusters); ch is the chicken house from which the pair was observed.
FIGURE 4. Photograph of Branstine's study area, taken at Hcl (fig. 3) facing northwest. LW is on the extreme left, NCL is the distant cottonwood in the center, oak clump M is on the extreme right.
FIGURE 6. Aggressive displays of the Lewis' Woodpecker: A. Bill-up display given to a Black-billed Magpie; B. Bill-up display to the bird's mate; C. Wings-out display to a conspecific intruder; D. Circleflight to a conspecific intruder.
FIGURE 10. Location of some Lewis' (LW) and Red-headed Woodpecker (RH) sitings on a map of southeastern Colorado. The locations were cited in the following studies: (1) this study (King's Center); (2) this study (Branstine's); (3) Dille, 1903; (4) Richards, 1908; (5) Hersey and Rockwell, 1909; (6) Warren, 1906; this study; (7) Henderson, 1920; (8) Bergtold, 1919; (9) Bergtold, 1920; (10) C. E. Bock, pers. comm., about 1970. |
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