Parvati Arga Bird Sanctuary Bar-headed goose "(Anser indicus)", Little grebe "(Tachybaptus ruficollis)", Eurasian wigeon "(Mareca penelope)", Mallard "(Anas platyrhynchos)", Red-crested pochard "(Netta rufina)", Tufted duck "(Aythya fuligula)," Knob-billed duck "(Sarkidiornis melanotos)", Ruddy shelduck "(Tadorna ferruginea)", Cotton pygmy-goose "(Nettapus coromandelianus)," Little cormorant "(Microcarbo niger)", Great cormorant "(Phalacrocorax carbo)," Common moorhen "(Gallinula chloropus)," Cattle egret "(Bubulcus ibis)", Intermediate egret "(Ardea intermedia)", Asian openbill "(Anastomus oscitans)", and Grey-headed swamphen "(Porphyrio poliocephalus)". Parvati Arga was declared a bird sanctuary on 23 May 1990. Prior to that it was under the fisheries department. Parvati Arga Bird Sanctuary Parvati Arga Bird Sanctuary is a bird sanctuary in Gonda district of
Bird-of-paradise lek-type mating system. Others, such as the "Cicinnurus" and "Parotia" species, have highly ritualised mating dances. Males are polygamous in the sexually dimorphic species, but monogamous in at least some of the monomorphic species. Hybridisation is frequent in these birds, suggesting the polygamous species of bird of paradise are very closely related despite being in different genera. Many hybrids have been described as new species, and doubt remains regarding whether some forms, such as Rothschild's lobe-billed bird of paradise, are valid. Birds-of-paradise build their nests from soft materials, such as leaves, ferns, and vine tendrils, typically placed in a tree