Pomarea (Monarcha) ugiensis
E. P. Ramsay, 1882,
Until recently treated as a race of M. castaneiventris (and always as conspecific with M. megarhynchus), but genetically#R, morphologically and vocally distinct. Differs from geographically, genetically and morphologically closest form M. megarhynchus in its all-black underparts (3); slightly larger size, with longer bill (effect size 2.08, score 2); three-note phrase vs single whistle (3) or single whistle-length (ns); and different call (1)#R. Monotypic.
Ugi, Three Sisters Is, Santa Ana and Santa Catalina, off Makira (San Cristobal), in SE Solomons.
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