Guianan warbling antbird

The Guianan warbling antbird, or Guianan antwarbler, (Hypocnemis cantator) is an insectivorous bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is found in Brazil, French Guiana, Guyana, Suriname, and Venezuela.

The Guianan warbling antbird is 11 to 12 cm (4.3 to 4.7 in) long and weighs 10 to 14 g (0.35 to 0.49 oz). Adult males have a black crown with a white central streak and a white supercilium on an otherwise black and white speckled face. Their upperparts are olive-gray with a white patch between the scapulars; the center of the patch has black and white speckles. Their rump is rufous. Their flight feathers are brown with yellowish olive-brown edges and their wing coverts black with white tips. Their tail is brown with pale buff tips to the feathers. Their throat is very pale gray. Their breast and sides are spotted with black and white, their belly's center is white, and their flanks and undertail coverts are rufous. Females have the same pattern but different colors than males. Their crown is streaked with pale buff, the interscapular patch is small or absent, and their wing coverts are olive-brown with pale buff tips. Juvenile males have the adult pattern but are duller overall, lack the interscapular patch, and have a dull brown breast. Subadult males resemble adult females.