Social structuring at a communal roost of Choughs Pyrrhocorax pyrrhocorax |
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Authors: | E STILL P MONAGHAN E BIGNAL† |
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Institution: | *Applied Ornithology Unit, Department of Zoology, Glasgow G12 8QQ;†Nature Conservancy Council, Quinhill, Clachan, Argyll |
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Abstract: | The social structure of a communal roost of Choughs Pyrrhocorax pyrrhocorax was studied between July and September 1985. Different age classes within the roost were spatially segregated. Third-year birds were significantly more likely to attack another Chough and roosted in the densest part of the roosting flock. First-year birds roosted significantly lower down the roost cliff and on the periphery of the flock. |
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