Publications
Vocal identity and information content in the flight initiation calls of greylag geese (Anser anser)
Vocal signals are used to convey information in environments and over distances where signals of other modalities would fall short. Som...
Vocal encoding of heritable sociability prevails over emotions in sheep bleats
Vocalizations of animals are good indicators of their emotions. Temperament is known to influence the regulation and expression of emot...
The socioecological correlates of collective movements in giraffes
How collective behaviors emerge from group members with potentially divergent needs remains poorly understood in many social species. G...
Assessing Animal Welfare: A Guide to the Valid Use of Indicators of Affective States: Chapter 4 – Vocal signals
This chapter analyses if, based on current evidence, vocalisations have construct validity as indicators of emotional valence across sp...
Acoustic markers of negative arousal in lambs: Evidence from behavioural and eye thermal profiles
Vocalisations are known indicators of emotional arousal in animals, but their assessment using simultaneously collected physiological a...
Plains zebra (Equus quagga) group movement decisions are associated with visual and tactile behaviours performed by initiators, followers and non-followers
Diverging needs often occurs among group members, prompting group-living animals to engage in collective decision-making, such as coord...
Birdsong diversity across the world
Why do skylarks or blackbirds sing such diverse and melodious songs (1, 2), whereas great tits repeat the same two motifs over and over...
Egalitarian Decision Making without Equality: Lessons from Needs Based Leadership and Consensus in Animal Societies
Drawing on formal models and empirical studies of collective decision making in animal groups, we show that egalitarian systems can eme...
Humans can accurately categorise negative but not positive emotional facial expressions in horses
Recognising emotional facial expressions plays a key role in communication, both within and between species. Many non-human animals, in...
Context-dependent variation in meerkat short note calls reflects emotional arousal
Many animals produce the same call type in distinct contexts, yet acoustic variation can encode additional information, such as the pro...