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 (music) screaming incorrectly. Some vocalists of metal bands have had to stop screaming, making music altogether, or even undergo surgery due to screaming in harmful ways that damage the vocal cords. One example is Sonny Moore, formerly of the band From First to Last, who had to leave the band as vocalist due to the damage it was causing to his vocal cords, which required surgery to repair. However, with proper technique, screaming can be done without harm to the vocal cords. Melissa Cross is a vocal teacher who specializes in this, and has taught many vocalists such as Randy Blythe