Individuals have been found in the lowland primary forest at Poring in Sabah and Taleban in Thailand, Bario highland and secondary forest of Balui, both in Sarawak.

M. ecaudatus ranges in the primary forest and open habitat[2] from Thailand, Vietnam, Peninsular Malaysia, Sumatra; Kinabalu, Danum, Tawau, and Tenom in Sabah; Temburong and Tasik Merimbun in Brunei; Bario in Sarawak; to Kapuas and Kutai in Kalimantan.

In Cameron Highlands, Peninsula Malaysia, females were pregnant in February and extending to March and June.

[5] A specimen MTA96004 was collected in the canopy net approximately 30 m above ground level.

According to Lekagul and McNeely (1977), M. ecaudatus has been recorded both in the lowlands and on mountains up to 3,000 m in Thailand.