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
Restrictions on political parties and/or neo-nazi organizations. Restrictions on political parties Restrictions on political parties have existed in many countries at various times. In Uganda, for instance, political parties were restricted in their activities from 1986; in the non-party "Movement" system instituted by Museveni, political parties continued to exist but could not campaign in elections or field candidates directly (although electoral candidates could belong to political parties). A constitutional referendum cancelled this 19-year ban on multi-party politics in July 2005. Egypt has been criticized for restricting political party activity. In Europe; Germany, Italy, Turkey, and France have laws allowing the government to ban extremist