Batagur baska
Drawn from open occurrence records in and around Sundarbans National Park, aggregated onto a 50 km grid. A cell is matched by its centre, which can sit up to 16 km outside the boundary, so this covers the surrounding country too.
Occurrence records measure where people looked and found something, which is not the same as where the animal is. This is a relative likelihood, not a probability.
A grid cell is a square of the map, not a sighting: 1 square of 50 km carry records for Northern River Terrapin in and around Sundarbans National Park, and the 1 records behind them were collected by other people and published openly. Nothing here counts animals, and a place with more records is not always a place with more animals.
One of the largest turtles in Asian freshwaters, the Northern River Terrapin grows to a weight of 18 kg and a length of 60 cm. It is generally olive-brown with a yellowish underside and a small head featuring an upturned snout. During the breeding season from December to March, the males undergo a striking transformation, developing a black head and neck paired with orange or crimson limbs and backs. Their eyes also change color, turning yellowish-white in males and brown in females.
Written from the English Wikipedia article Northern river terrapin (CC BY-SA 4.0).
Of the 9 species with an atlas page recorded in and around Sundarbans National Park, the Northern River Terrapin is the 9th most recorded.
The full atlas page, and everywhere else it is recorded