Family Vireos (Vireonidae)

Least Concern

Yellow-green Greenlet (Hylophilus viridiflavus)


French: Viréon jaune-vert German: Panamavireo Spanish: Verdillo panameño

Hylophilus viridiflavus


, 1861,

#R, Atlantic slope near Panama Railroad, Canal Zone, Panama


Hitherto treated as conspecific with H. flavipes (which see), but differs in its darker, richer yellow underparts (2); greener, less brown upperparts (1); and slower song (score 3) with fewer notes (score 1)#R. Two subspecies recognized.

What do (1) and (2) mean? Learn more about the scoring system.
Subspecies and Distribution
  • H. v. viridiflavus Lawrence, 1861 – SW Costa Rica and Panama (Caribbean coast to around Canal Zone, Pacific coast E to lower R Bayano).
  • H. v. xuthus Wetmore, 1957 – Coiba I, off SW Panama.
  • Descriptive notes

    10·5–11·7 cm; 11·3–13·7 g. Nominate race has crown to tail including wing-coverts and secondaries yellowish olive, primaries blackish with outer webs fringed yellowish olive... read more


    Song a series of slurred or double notes, “chi-cheer, chi-cheer” or “du-wee, du-wee”, repeated 5–20... read more


    Found in dense low scrub, oil palm (Elaeis guineensis) plantations, and bamboo stands on... read more

    Food and feeding

    Stomach contents of two individuals contained spiders, an earwig (Dermaptera), ootheca, a hymenopteran, small caterpillars, a bupestrid,... read more


    Season Apr–Jul, also one nest in Dec, in Costa Rica; in Panama, dependent fledgling in mid Aug. Nest in Costa Rica a flimsy hemispherical... read more


    Apparently sedentary.

    Status and conservation

    Not globally threatened (Least Concern). Generally considered to be common or abundant, and possibly increasing due to its acceptance of highly modified or regenerating... read more

    Recommended citation

    del Hoyo, J., Collar, N. & Kirwan, G.M. (2019). Yellow-green Greenlet (Hylophilus viridiflavus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 18 April 2019).