BROWN TREE SNAKE Boiga irregularis (Merrem, 1802)
The Brown Tree Snake is found along the east coast north of Sydney Harbour, and tropical parts of Northern Australia. Specimens sometimes attain two metres in length. Two basic colour phases occur. A brick red phase, with some black markings is found east of Cape York and along the east coast. A red and white banded form occurs in other parts of tropical Australia. On Cape York itself, these forms hybridise.
The scalation is smooth with 19-23 mid body rows, 225-265 ventrals, single anal, and 85-130 divided subcaudals.
This rear fanged venomous snake, has such a feeble venom apparatus that venom is rarely injected when it bites humans. When caught it is usually aggressive, striking repeatedly from the s-shaped coils in the forepart of its' body.
The Brown Tree Snake is strictly nocturnal, and by day is usually found sheltering in rock outcrops or tree hollows. Around Sydney many specimens are caught in the sandstone 'honeycombs' of caves in hilly areas.
Colonies of up to six specimens are commonly found.
At night specimens are commonly found crossing roads.
The Brown Tree Snake feeds on a variety of vertebrates, which are constricted strongly as well as being bitten in order to be killed.
This species lays about ten eggs, with hatchlings measuring about 28 cm in length.

The above was from the book Australian Reptiles and Frogs by Raymond Hoser and now available on a fantastic CD-Rom along with a vast amount of other information, papers and the like on reptiles, frogs and other wildlife.