Fig. 1. Map showing the Klias Peninsula region in western Sabah, in the northern part of Borneo (inset), Malaysia, and the research sampling sites in riverine, mangrove, and mixed mangrove-riverine forests along rivers in Padang Teratak Bird Sanctuary, Padas Damit Forest Reserve, Menumbok Forest Reserve, Binsulok Forest Reserve, Klias Forest Reserve, Kg. Hindian Forest Reserve, and Nabahan Forest Reserve, where the river surveys of the sleeping sites of proboscis monkeys were conducted. ; Published as part of Bernard, Henry, Abram, Nicola K., Kulanthavelu, Menaga, Oram, Felicity & Matsuda, Ikki, 2021, Population trends and conservation status of proboscis monkeys (Nasalis larvatus) in the face of habitat change in the Klias Peninsula, Sabah, Borneo, Malaysia, pp. 176-187 in Raffles Bulletin of Zoology 69 on page 178, DOI:10.26107/RBZ-2021-0015, http://zenodo.org/record/5352064