Our new paper has been accepted in Behavioural Processes, all about leadership in flocks of birds (pigeons, of course). Pigeon leadership hierarchies were similar across environmental context; familiar and unfamiliar. However, we found that no covariates (e.g. dominance, personality) could predict leadership score in either context, besides body mass, with heavier individuals leading group movements more often than lighter individuals.
Dr Steve Portugal, Animal Behaviour and Physiology 
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