Northern and west-central Colombia (Norte de Santander; Cauca Valley); north, western and south-eastern Venezuela (Falcón east to Miranda; southern Portuguesa; western base of Andes in Trujillo and Táchira; isolated area in Bolívar); south-western Guyana; and north, central and eastern Brazil, north-western and eastern Bolivia and eastern Paraguay,
Population
Estimated population is unknown (2010).
Flavescent Warbler (Myiothlypis flaveola) [XC82883]
by Luiz C. Silva from Piren\u00f3polis. Fazenda Vagafogo, Brazil (song)
Flavescent Warbler (Myiothlypis flaveola) [XC427638]
by Caio Brito from Mata do Pau Ferro, Areia-PB, Para\u00edba, Brazil (canto)
Subspecies
Often placed together with White-rimmed Warbler (Myiothlypis leucoblephara), White-striped Warbler (Myiothlypis leucophrys), Buff-rumped Warbler (Myiothlypis fulvicauda) and Neotropical River Warbler (Myiothlypis rivularis) in a separate genus, Phaeothlypis. However, differs from those four in having no particular affinity for water and having quite different plumage. Formerly included within the "citrine" group of Andean species (Citrine Warbler (Myiothlypis luteoviridis), Pale-legged Warbler (Myiothlypis signata) and Black-crested Warbler (Myiothlypis nigrocristata)), which it resembles in plumage. Appears to represent closest link between the Phaeothlypis group and the rest of present genus. Widely remote populations in north-eastern Colombia and northern Venezuela perhaps separable as subspecies pallidirostris.
The following 2 subspecies are recognised:
pallidirostris (Oren, 1985) - Tropical north-eastern Colombia to northern Venezuela and southern Guyana.
flaveola (Baird, 1865) - Colombia and Venezuela to north-eastern Argentina.
BirdLife International Species Factsheet