Recent evidence from osteology, behaviour, plumage, breeding biology, and genetics has led to a consensus that the Hawaiian honeycreepers are closely related to the cardueline finches, which include birds such as goldfinches, canaries, siskins, and crossbills.
First described in the early twentieth century, only one nest has ever been found - and little has since been discovered about the bird's behaviour and breeding ecology.
We analysed aggressive and courtship behaviour of breeding males and females in the presence of adult male, adult female and 1-year-old male natural decoys.
Little is known about mating behaviour or breeding grounds.
Much of the white-bellied sea eagle's behaviour, particularly breeding, remains poorly known.
Little is known of the behaviour or breeding habitat of this martin, although like other swallows it feeds on insects caught in flight, and its wide bill suggests that it may take relatively large species.
Female spacing behaviour and breeding suppression has been modelled as a classical tragedy-of-the-commons problem [ 52].
Such mating information includes descriptions of nest building, mate searching, advertisement call, male satellite behaviour, and breeding aggregation.
Reports on Myodes' spacing behaviour and breeding support predictions above made for territoriality: the number of breeders is limited by social suppression in wild populations [ 23, 24].
