[2][3] The tit hylia was described by John Cassin in 1855 as Diceum Rushiæ based on a specimen collected from present-day Gabon.

[4] The tit hylia is a bird of the upper and middle canopy, usually foraging from 5–15 m (16–49 ft) from the forest floor and rarely coming lower.

[4] The tit hylia is a monogamous breeder, and a report from Angola has suggested that it may engage in cooperative breeding as well.

The round nest, built by the pair or group, is large, 15 cm (5.9 in) across, and is made of plant fibres.

Two eggs are laid, although there is no information about the incubation, up to four adults have been reported feeding the chicks, and the nest is used for roosting after the breeding season.