Julia Penndorf

1 month ago | biorxiv.org | Julia Penndorf |Damien R. Farine |JOHN MARTIN |Lucy Aplin

AbstractDominance hierarchies are a common feature of stable groups, allowing animals to limit the costs of fighting over access to resources. However, while the emergence of dominance is relatively well known from species that form stable groups, less is known about whether hierarchies are maintained in societies with open group membership.

May 16, 2024 | biorxiv.org | Julia Penndorf |Damien R. Farine |Lucy Aplin

AbstractDominance hierarchies allow animals living in stable groups to limit the costs of fighting over access to resources. However, little is known about whether hierarchies are maintained in more open, fission-fusion societies, where individuals interact with large numbers of individuals. We recorded social associations and aggressive interactions in a highly social, communally roosting parrot, the sulphur-crested cockatoo (Cacatua galerita).

Oct 3, 2023 | biorxiv.org | Damien R. Farine |Lucy Aplin |Julia Penndorf

AbstractDominance hierarchies allow group-living animals to limit the potential costs of fighting over access to resources, but can these be maintained in more open, fission-fusion societies, where individuals have incomplete social information? We recorded social associations and aggressive interactions in a highly social, large-brained parrot, the sulphur-crested cockatoo (Cacatua galerita).