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Article Dans Une Revue Behavioural Processes Année : 2021

First description of nest-decoration behaviour in a wild sub-Antarctic shorebird

Résumé

A wide range of animal species accumulate objects in, on, and/or around structures they build. Sometimes, these accumulations serve specific functions (e.g. structural or isolating features) or are purely incidental, while in other cases the materials are deliberately displayed to serve signalling purposes (extended phenotype signals). In this pilot study, we employed systematic in situ observations and camera trapping to describe for the first time that both partners of a territorial shorebird, the black-faced sheathbill (Chionis minor ssp minor) collect, carry, and arrange colourful marine shells and dry twigs within and around their nest cavity. Our observations expand the taxonomic breadth of avian extended phenotype signals, by showing that at least one species within a largely understudied group i.e., Charadriiformes, exhibits nest-decoration behaviour. Multiple manipulative experiments are needed to explore further the signalling function of these decorations, which opens new exciting avenues for animal communication and cognition research.
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Dates et versions

hal-03324982 , version 1 (24-08-2021)

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Samara Danel, Timothée Zidat, Annick Lucas, Dora Biro, Francesco Bonadonna. First description of nest-decoration behaviour in a wild sub-Antarctic shorebird. Behavioural Processes, 2021, 188, pp.104408. ⟨10.1016/j.beproc.2021.104408⟩. ⟨hal-03324982⟩
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