Re breeding there is not much observation data available, but their cooperative breeding system might be quite flexible: anything goes
There is an oldy study on C. striatus in Gabon:
http://documents.irevues.inist.fr/handle/2042/55085
A cooperative breeding system involving unrelated helpers and females sharing a nest is rather uncommon.Two females belonging to a same family group may occasionally lay their eggs in the same, well protected, nest. "Helpers at the nest" are of common occurence among speckled mousebirds. ln most cases they are subadult males from the preceding generation helping their own parents. However, helpers can also be unrelated adults of both sexes. « Bachelor » male offspring can provide as much food to their sibling nestlings as their parents do.
