| Taking five urban parks as the observation sites, Norbulingka, Long Wangtan Park and Potala palace square in Lhasa, Fujian Park in Nyingchi, Tianjin Square in Qamdo, the bird community composition and exotic birds species were investigated between May and June, 2017 by the line intercept method. Results should that 36 species in 9 orders and 20 families were recorded altogether. There were 12 Palaearctic species, 12 Oriental realm species, and 12 Cosmopolitan species. Among them, 24 species were residents, 6 species were summer migrants, 2 were winter migrants, and 4 were travelling birds. The 4 exotic species, plain laughingthrush (Garrulax davidi), mynah (Acridotheres cristatellus), Red billed Leiothrix(Leiothrix lutea), and Debye parrot(Psittacula derbiana), accounted for 11.1% of the total bird species. These preliminary findings showed that the risks of invasive species couldnot be ignored on the plateau. |
