Argentina, Belize, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Suriname, Trinidad and Tobago, Venezuela.
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Population
Estimated population is 5,000,000 - 50,000,000 (2010).
Yellow-olive Flatbill (Tolmomyias sulphurescens) [XC378069]
by Luiz C. Silva from Mecayapan, Mecayapan, Veracruz, Mexico (song)
Yellow-olive Flatbill (Tolmomyias sulphurescens) [XC393562]
by GABRIEL LEITE from Coxipo, Cuiab\u00e1, Mato Grosso, Brazil (song)
Subspecies
Relationships within genus uncertain, pending completion of major genetic study. Taxonomy of present species requires further resolution. Regional differences in voice, plumage and eye colour suggest to some authorities that subspecies may represent more than one species. Some plumage variation appears clinal, but clines are discordant. Several subspecies, particularly within South America, may not be valid.
The following 16 subspecies are recognised:
cinereiceps (Sclater, PL, 1859) - Southern Mexico (Oaxaca and Veracruz east to Yucatán Peninsula) south to Costa Rica.
flavoolivaceus (Lawrence, 1863) - Eastern Panama and north-western Colombia.
asemus (Bangs, 1910) - Western and central Colombia.
exortivus (Bangs, 1908) - North-eastern Colombia and northern Venezuela.
berlepschi (Hartert & Goodson, 1917) - Trinidad.
cherriei (Hartert & Goodson, 1917) - Eastern Venezuela, the Guianas and northern Brazil (upper R Branco and Amapá).
duidae Zimmer, JT, 1939 - Southern Venezuela and north-western Brazil (northern Amazonas perhaps to western Pará).
inornatus Zimmer, JT, 1939 - South-eastern Peru (northern Puno).
pallescens (Hartert & Goodson, 1917) - Central, southern and eastern Brazil (southern Maranhío, Piauí and Paraíba south to Mato Grosso, Bahia and possibly western Minas Gerais) south to Bolivia (Beni south to Tarija) and northern Argentina (south to Tucumán).
grisescens (Chubb, C, 1910) - Central Paraguay and northern Argentina (eastern Chaco and Formosa, northern Santa Fe).
sulphurescens (Spix, 1825) - Eastern Paraguay, north-eastern Argentina (Misiones) and south-eastern Brazil (eastern Minas Gerais and Espírito Santo south to Rio Grande do Sul).