The bridled white-eye on Guam was classified as one subspecies within a complex of bridled white-eye (Zosterops conspicillatus) populations found in the Mariana Islands (Pratt et al. 1979, p. 234; Jenkins 1983, p. 48; Pratt et al. 1987, p. 283). The Guam bridled white-eye is a small, warbler-like forest bird with bright, olive-green upperparts, olive-colored ear-coverts, a white orbital ring, and pale yellowish-white underparts (Jenkins 1983, p. 48). Its bill is yellow with black-brown tip; legs are dark olive-green. Juvenile was similar to adult.