It has an occurrence range of 57,700 km ( 22,300 sq mi ) .
The last population estimate , done in 2000 , showed between 5,800 and 6,960 adults .
It has an occurrence range of 57,700 km ( 22,300 sq mi ) , and the last population estimate , done in 2000 , showed between 5,800 and 6,960 adults .