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
Pool Parties space back to a functional swimming pool which would prevent future summer concerts. The final free show at McCarren was on August 24, 2008 where members of Yo La Tengo symbolically poured five one-gallon jugs of water from the stage into the pool. For the 2009 season the Pool Parties were moved to East River Park, which at the time was a slab of asphalt and grass along the East River next to luxury condominiums. The move brought many challenges to the Pool Parties. JellyNYC stated that the move meant a doubling of their site fees, along with the loss