Song feature Baja Arizona Oaxaca p * f * Post-hoc' 
Song length (sec) 1.78±0.06 1.52±0.Q5 1.37±0.11 11.29 <0.004 B-A (<0.001), B-0 (0.005). A-O (0.005) 
Pieplow and Francis • SONG VARIATION OF YELLOW-EYED JUNCOS 
467 
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