The nest is a large domed grass structure in a tree, into which 4-8 white eggs are laid. This species also builds communal roosting nests, used overnight and dismantled and rebuilt daily.
The bronze mannikin is 9–10 cm in length with a long black tail. The adult has a stubby grey bill, brown upperparts, a dark purple head and white underparts with dark flank markings. There is an iridescent green shoulder patch.
The sexes are similar, but immatures are plain brown above with buff head and underparts. This species has a number of calls including a rreep-rreeep in flight and a twittering when perched. Enjoy!!!