Invasion biology studies species like the brown tree this reptile, which wiped out 9 of Guam's 11 native bird species
The sea lamprey came in and virtually wiped out the only native trout species,
... [DOC] [TLE] Invasive Species: Feral peril - Stile [PAR] The brown tree snake invaded Guam, a small island in the western Pacific Ocean 
that is a US territory..