J. E. Gray, 1830,
Until recently#R considered conspecific with R. cowani and R. paludicola, but differs from latter’s geographically and morphologically closest race minor in its smaller bill (effect size −2.1, score 2); slightly longer tail (effect size 1, score 1); and paler rump (although race tantilla darker) (2); and from all subspecies of R. paludicola for which acoustic recordings exist (although some taxa including minor are unsampled; research and confirmation needed) as well as from R. cowani in its possession of short rattles vs buzzing calls (3)#R. Race tantilla sometimes synonymized, but rump darker. Two subspecies recognized.
Food and feeding
Status and conservation
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