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2

INDEX R. icteronotus
Thru May 5, 1962

146. By male, silent in FH; 146

Back R (With wing-droop, unless specifically stated otherwise.

With Φ's, including ΦR; 24. With Φ, wing-drooping gradual; 108. With Φ but no wing-drooping; 109.
With ΦR; description; 113; sketches; 100, 104, 110, 117.
Silent; 102, 107, 125, 133, 134.
With muffled R and/or ΦR; 111, 121. With muffled ΦR, and general ruffle of head & throat; 123 With muffled ΦR and BF, sketch; 118.
With ΦR's and HD Posture, sketches; 115.
With BU, R, and Eeyah, sketch; 146.
With Eeyah as male tuns away from female; 140
Peculiarly elaborate Back R Posture, sketch; 123
With TssN's; 112
General comment motivation; 107, 133, 144, 145.

Special Aspects Wing-droop
Very extreme with ΦR's, less extreme with TssN's; 112.
Derived from flight intention movements?; 134

HD Postures
Description & Sketches; 115.