Learned kin recognition cues in a social bird

Sharp, Stuart P and McGowan, Andrew and Wood, Matthew J and Hatchwell, Ben J (2005) Learned kin recognition cues in a social bird. Nature, 434 (7037). pp. 1127-1130. ISSN 1476-4687

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Abstract

In many cooperatively breeding birds, kin selection has an important role in the evolution and maintenance of social behaviour, and ‘helpers’ can maximize indirect fitness gains by preferentially allocating care to close relatives. Although there is evidence for kin-biased helping behaviour in several species, the mechanism of kin recognition underlying this behaviour is poorly understood. Vocalizations are the most commonly used cues in avian recognition systems, but the effectiveness of vocal signals as reliable recognition cues must depend on how they are acquired. However, there have been no experimental studies of the development of vocal recognition cues in cooperative birds; indeed, the ontogeny of all bird vocalizations other than song is poorly known in any species. Here, we show that cooperatively breeding long-tailed tits (Aegithalos caudatus) can discriminate between kin and non-kin according to the individual-specific characteristics of contact calls, and show experimentally that individuals learn these calls from provisioning adults during the nestling period. Finally, we show that the pattern of cooperative behaviour in this species is consistent with the use of recognition cues learned through association.

Item Type: Article
Uncontrolled Keywords: kin, breeding, birds
Subjects: Q Science > QH Natural history > QH301 Biology
Q Science > QL Zoology
Divisions: Faculty of Business, Computing and Applied Sciences > School of Natural & Social Sciences > Environmental Sciences
Research Priority Areas: Environmental Dynamics & Governance
Depositing User: Matt Wood
Date Deposited: 02 Jul 2014 08:14
Last Modified: 28 Nov 2016 12:42
URI: http://eprints.glos.ac.uk/id/eprint/550

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