The most important aspect that is considered while stating the difference between a ship and a boat is the size. It is said that the best way to differentiate between a ship and a boat is to remember that âA ship can carry a boat, but a boat cannot carry a ship.â. Credit: Jyoti Luthra.
Site and Date of Introduction: The brown tree snake was introduced into Guam in the 1950s. The snake was first sighted inland from the seaport and became conspicuous throughout central Guam by the 1960s.By 1968, brown tree snakes had successfully dispersed throughout the island.eason(s) Why it has Become Established: The brown tree snake has become established on Guam due to the absence of natural population controls and the abundance of vulnerable prey on the island. For example, introduced lizards are popular food items for young snakes.
(Boiga irregularis). DESCRIPTION: Brown tree snakes may be any length from 18 inches as juveniles to over 8 feet long as adults. They are generally olive green to brown, although they may be somehwhat yellow or have slight saddle-like splotches off red.They have vertical pupils and a large head relative to their body.This species is mildly venomous. They are a tropical species that lives in trees and shrubs but may also be found in grasslands. Brown tree snakes prey nocturnally on small animals, including mammals, birds, and lizards.They also eat the eggs of birds and lizards. PATHWAYS/HISTORY: This species is native to Indo-Pacific islands including New Guinea, the Solomon Islands, northern and eastern Australia and eastern Indonesia.hey have vertical pupils and a large head relative to their body. This species is mildly venomous. They are a tropical species that lives in trees and shrubs but may also be found in grasslands. Brown tree snakes prey nocturnally on small animals, including mammals, birds, and lizards.