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Horned Screamer song and calls

Anhima cornuta

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Birdsong and calls are often the easiest way to identify the Horned Screamer, especially when the bird is hidden in dense foliage. Below is what to listen for.

Song

The 'song' is a loud, far-carrying, trumpet-like call, often described as a 'yell' or 'scream,' typically given in a duet by a pair. It consists of a series of resonant, rising and falling notes, 'hoo-hoo-hooo-hooo-hoooo'.

Calls

Various alarm calls, contact calls, and territorial calls, all characterized by their loud, resonant, and often piercing quality. They can be heard from a considerable distance.

When they vocalize

Most vocal at dawn and dusk, and throughout the day, especially when disturbed or during territorial disputes.

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