Reproductive biology

Most species are cooperative breeders with surviving progeny from previous years acting as helpers at the nest, or at least having delayed dispersal. Studies indicate high adult survival rates and abundant extra-pair copulations, with resident males often fathering a minority of the offspring produced in their territory. Nests are usually domed balls of woven grass with side entrances, with clutches of two to four red-spotted, white eggs. Incubation, usually by the female, lasts 10-14 days; young are fed for four to six weeks.

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