Data from: Perturbations highlight importance of social history in parakeet rank dynamics
van der Marel, Anne Marie; Hobson, Elizabeth A. (2023), Data from: Perturbations highlight importance of social history in parakeet rank dynamics, Dryad, Dataset, https://doi.org/10.5061/dryad.cfxpnvx9h
Dominance hierarchies can provide many benefits to individuals, such as access to resources or mates, depending on their ranks. In some species, rank can emerge as a product of a group’s history of social interactions. However, it can be difficult to determine whether social history is critical to rank in observation-based studies. Here, we investigated rank dynamics in three captive groups of monk parakeets (Myiopsitta monachus). We used experimental social perturbations to test whether social history shapes rank emergence in these groups. Using targeted removals and reintroductions, we tested whether differently ranked individuals could re-take their ranks in hierarchies after reintroduction following their removal period from the group. We performed perturbations that consisted of an eight-day removal and an eight-day reintroduction period of 15 differently ranked focal birds. We found that no focal birds could regain their previous rank immediately following reintroduction and that the top-ranked birds showed greater relative rank loss than middle/low-ranked birds. We also found that morphology, specifically body weight, was unassociated with rank. Combined with previous results, this experiment supports the hypothesis that rank in monk parakeet dominance hierarchies is more likely to be an emergent outcome of past interactions and memory rather than based on individual characteristics. Gaining a better understanding of how individuals achieve and maintain rank can give insight into the role of cognition on rank acquisition, as rank position can have significant biological effects on individuals in hierarchically structured groups.
Please check out our READme file for details about the data files. The script to run our code can be found at the link under Related Works.
We performed all analyses in R version 4.1.2 (R Core Team 2021) and created the figures using ggplot2 (Wickham 2016).
Division of Integrative Organismal Systems, Award: 2015932
National Science Foundation, Award: 2146752
Fondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológica, Award: 3220742