The original swamp forests have almost entirely been removed as the plain has been converted to rice paddies, other agriculture, and urban areas like the massive Bangkok, and much of the wildlife that once inhabited these plains has disappeared including a large number of fish in the river systems, birds such as vultures, the Oriental Darter (Anhinga melanogaster), White-eyed River Martin (Pseudochelidon sirintarae) and the Sarus Crane (Grus antigone) and animals such as tigers, Asian elephants, Javan Rhinoceroses and the much-hunted Schomburgk's Deer. Today we can only estimate a description of the original habitat and wildlife by comparing with that of neighbouring countries and it is believed that it would have consisted of freshwater swamps inland and salty mangroves on the coast and the river estuaries. The swamp would have been covered in Phragmites marsh grasses and today there is a small area of this remaining in Khao Sam Roi Yot National Park, a relic of the original landscape.