Julia Penndorf

Long-term stability of dominance hierarchies in a wild parrot with fission-fusion dynamics

This study shows that sulphur-crested cockatoos form stable dominance hierarchies despite dynamic social interactions and open group membership.

Social and ecological factors associated with innovation in urban sulphur-crested cockatoos (Cacatua galerita)

The paper investigates how urbanization and social factors influence innovation in sulphur-crested cockatoos using extractive-foraging tasks.

Sex-dependent carry-over between winter associations and breeding proximity in a communally roosting parrot

The paper shows male sulphur-crested cockatoos breed closer to their winter social associates, while females do not, indicating sex-dependent carry-over of social relationships to breeding proximity.

To preen or not to preen: social predictors of allopreening in a wild parrot

This study examines allopreening in wild sulphur-crested cockatoos, finding it correlates with aggression and social association strength rather than pair bonding.

Low-cost animal tracking using Bluetooth low energy beacons on a crowd-sourced network

This paper introduces a low-cost, low-energy animal tracking system using Bluetooth low energy beacons and crowd-sourced mobile phone networks to enable long-term tracking of small animals in urban and non-urban environments.