Solomon Islands.
The brown tree snake (Boiga irregularis) was accidentally introduced to Guam in the late 1940s or early 1950s, probably from the Solomon Islands. Native to northeastern Australia, eastern Indonesia, and Melanesia, the brown tree snake has signiﬁ cantly damaged the economy and ecology of Guam. Invasions of the Brown Tree Snake A round 1950, populations of the brown tree snake (Boiga irregularis) wereintroduced on Guam, a previously snake-free island. This introduction was theresult of post-World War II traffic carrying military materials from the SouthPacific region (Savidge 1987; Rodda et al. 1992). The Brown Tree Snake Of Guam. The Brown Tree snake (Boiga irregularis) is an interesting snake that has caught a lot of news headlines over the past decade. It’s a rear fanged colubrid snake endemic to the Northern coast of Australia, Papua New Guinea, and the Islands in northwestern Melanesia. The brown tree snake (Boiga irregularis) is an arboreal rear-fanged colubrid snake native to eastern and northern coastal Australia, eastern Indonesia (Sulawesi to Papua), Papua New Guinea, and a large number of islands in northwestern Melanesia. The brown tree snake is found in woodlands, rainforests and open rocky outcrops. It often takes shelter in hollow trees, caves and in rock crevices. It occurs over much of coastal eastern and northern Australia from the Sydney area to the Kimberleys in Western Australia. Classification: Original Distribution: The brown tree snake is native to the Moluccas (Spice Islands), Indonesia from Wallace's Line west of Sulawesi through New Guinea, and the humid northern and eastern rims of Australia to the Santa Cruz Islands (including the Solomon Islands, but excluding the San Cristobal area). Geography. Brown tree snakes come from Papua New Guinea, Indonesia, the Solomon Islands and both the northern and eastern regions of Australia. As a mishap, brown tree snakes were also brought into Guam, which is a United States remote island territory. They got onto the island through cargo ships.
http://www.aphis.usda.gov/publications/wildlife_damage/content/printable_version/fs_brown_tree_snake_2011.pdf http://www.ma.utexas.edu/users/davis/375/LECTURES/L24/snake3.pdf http://snakebytes.tumblr.com/post/69514987068/the-brown-tree-snake-of-guam https://en.wikipedia.org/wiki/Brown_tree_snake http://www.answers.com/Q/Where_does_the_brown_tree_snake_live http://www.columbia.edu/itc/cerc/danoff-burg/invasion_bio/inv_spp_summ/boiga_irregularis.html http://animals.mom.me/habitat-brown-tree-snake-4010.html
where did the brown tree snake come from