Camptostoma

The genus contains two species.^[2]

Genus Camptostoma – P.L. Sclater, 1857 – two species

Common name	Scientific name and subspecies	Range	Size and ecology	IUCN status and estimated population
Northern beardless tyrannulet	Camptostoma imberbe Sclater, PL, 1857 Three subspecies C. imberbe imberbe C. imberbe ridgwayi C. imberbe thyellophila	southeastern most Arizona and Texas of the United States through Mexico and Central America to northwestern Costa Rica	Size: Habitat: Diet:	LC
Southern beardless tyrannulet	Camptostoma obsoletum (Temminck, 1824)	Costa Rica through South America south to Paraguay, Bolivia, and Argentina.	Size: Habitat: Diet:	LC

These are very small passerine birds which breed in the tropical and subtropical Americas from the southernmost USA south to Paraguay, Bolivia, and Argentina. The two species are similar, and were once considered conspecific. However, they overlap without interbreeding in central Costa Rica.

These are species of light forests, cultivation and gardens with trees. The domed nest is made of plant fibre or leaves with a side entrance.

They are active birds, feeding in a vireo or warbler-like fashion on insects, spiders and berries.

• ffrench, Richard (1991). A Guide to the Birds of Trinidad and Tobago (2nd ed.). Comstock Publishing. ISBN 0-8014-9792-2.
• Hilty, Steven L (2003). Birds of Venezuela. London: Christopher Helm. ISBN 0-7136-6418-5.
• Stiles and Skutch, A guide to the birds of Costa Rica ISBN 0-8014-9600-4

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