Common swift that resemble a crescent or a boomerang. Their call is a loud scream in two different tone pitches, the higher of which issues from the female. They often form 'screaming parties' during summer evenings, when 10–20 swifts will gather in flight around their nesting area, calling out and being answered by nesting swifts. Larger "screaming parties" are formed at higher altitudes, especially late in the breeding season. The purpose of these parties is uncertain, but may include ascending to sleep on the wing, while still breeding adults tend to spend the night in the nest. Swifts may nest in former
Screaming piha which is a reference to its voice. Among the Ecuadorian Secoyas, the bird is known as the "Kwow-kwee-yo." The sound is frequently used in movies, and also can be heard in the background of the popular game Angry Birds Rio. Screaming piha The screaming piha ("Lipaugus vociferans") is a species of passerine bird in the family Cotingidae. It is found in humid forests in the Amazon and tropical parts of the Mata Atlântica in South America. It is adapting well to human settlement areas like gardens and parks. It is considered to be of least concern by BirdLife International. Both