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Photographing and documenting the local fauna (Brasília, DF, Brazil - Near Coordinates [-15.696506 -47.860013]), I found this rather unusual-looking bird whose name I couldn't find:

Two birds with long, kind of spiky-looking feathers on their heads, dark wing, beige-ish white chest and long tail feathers

(Image was now uploaded to Wikimedia under my account "AlephGuira")

Possibly useful information:

  • One was seen preying on what looked like Taturanas (https://en.wikipedia.org/wiki/Lonomia), but due to their venomous nature, I'm not sure.
  • The observed flock was composed of 7 birds.
  • There seems to be sexual dimorphism (The other one, not pictured, seems to be smaller, has shorter head feathers, whiter wings and lacks the orange-pointed beak).
  • They were first seen on a Pequi Tree (https://en.wikipedia.org/wiki/Caryocar_brasiliense).
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These look very similar to the Guira cuckoo (Guira guira) which are found in this part of Brazil.

enter image description here

Source: https://en.wikipedia.org/wiki/Guira_cuckoo

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