Order Passeriformes 83 species in 17 genera Size: Between 11 cm (Square-tailed Saw-wing, Psalidoprocne nitens) and 25 cm (Montane Blue Swallow, Hirundo atrocaerulea). Distribution: All boigeographic regions. The species breeding in temperate regions are migratory, moving in winter to areas with insect abundance. Habitat: All type of open areas. Feeding: Flying invertebrates. Breeding: They built the nest with mud (an open cup or a closed chamber), attached to a building or cliff. 2-5 eggs. Incubation 14-16 days. Nestling period 16-24 days. Threat status: 7 threatened species (1 Critically Endangered, 1 Endangered and 5 Vulnerable). [+info]