A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Two sympatric species of passerine birds imitate the same raptor calls in alarm contexts
Tekijät: Ratnayake C., Goodale E., Kotagama S.
Julkaisuvuosi: 2010
Lehti:: The Science of Nature - Naturwissenschaften
Tietokannassa oleva lehden nimi: Naturwissenschaften
Vuosikerta: 97
Numero: 1
Aloitussivu: 103
Lopetussivu: 108
Sivujen määrä: 6
ISSN: 0028-1042
DOI: https://doi.org/10.1007/s00114-009-0617-7
Tiivistelmä
While some avian mimics appear to select sounds randomly, other species preferentially imitate sounds such as predator calls that are associated with danger. Previous work has shown that the Greater Racket-tailed Drongo (Dicrurus paradiseus) incorporates predator calls and heterospecific alarm calls into its own species-typical alarm vocalizations. Here, we show that another passerine species, the Sri Lanka Magpie (Urocissa ornata), which inhabits the same Sri Lankan rainforest, imitates three of the same predator calls that drongos do. For two of these call types, there is evidence that magpies also use them in alarm contexts. Our results support the hypothesis that imitated predator calls can serve as signals of alarm to multiple species. © 2009 Springer-Verlag.
While some avian mimics appear to select sounds randomly, other species preferentially imitate sounds such as predator calls that are associated with danger. Previous work has shown that the Greater Racket-tailed Drongo (Dicrurus paradiseus) incorporates predator calls and heterospecific alarm calls into its own species-typical alarm vocalizations. Here, we show that another passerine species, the Sri Lanka Magpie (Urocissa ornata), which inhabits the same Sri Lankan rainforest, imitates three of the same predator calls that drongos do. For two of these call types, there is evidence that magpies also use them in alarm contexts. Our results support the hypothesis that imitated predator calls can serve as signals of alarm to multiple species. © 2009 Springer-Verlag.
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