Globally threatened avian species listed on the IUCN Red List include : Baer s Pochard ( " Aythya baeri " ), classified as Critically Endangered and may be extirpated from the Thale Noi area and from Thailand, however data is lacking on this species; the Masked Finfoot ( " Heliopais personata " ) is Endangered; the Lessor Adjutant Stork ( " Leptoptilos javanicus " ) is Vulnerable, although it was once the most abundant species of stalk and the Spot-billed Pelican ( " Pelecanus philippensis " ) is classified as Near Threatened.
