Abstract

MOLINA MARTINEZ, Yair Guillermo. PREDATION OF PALE-BREASTED THRUSH EGGS BY THE ARIEL TOUCAN IN BRAZIL: FAILURE OF THE ANTI-PREDATORY STRATEGY. Acta biol.Colomb. [online]. 2021, vol.26, n.2, pp.278-282.  Epub Jan 18, 2022. ISSN 0120-548X.  https://doi.org/10.15446/abc.v26n2.86700.

The Channel-billed Toucan (Ramphastos vitellinus) is an omnivorous bird that eventually is nest-robbers. Several birdsongs display anti-predatory strategies such as attacks and mobbing calls to face this kind of predator. This note reports a predatory event of one Channel-billed Toucan upon eggs of Pale-breasted Thrush (Turdus leucomelas) and describes the anti-predatory behavior, principally alert and mobbing calls of the thrush. Even though the Pale-breasted Thrush displayed the anti-predatory behaviors to harass the toucan, the egg predation was not avoided. Although the predation upon eggs by Ramphastos vitellinus has been reported several times, the majority of reports lack the identity of the bird species affected, this being the first confirmed record in Turdus leucomelas.

Keywords : acoustic signal; mobbing behaviour; nest predators; alarm call; call of persecution.

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