Image taken at the Ballarat Wildlife Park in central Victoria Australia. It is showing greener than usual due to an overhead green light.
Camera used Olympus E-520 DSLR
Focal length 150.0mm
Tiger snakes are a type of venomous serpent found in southern regions of Australia, including its coastal islands and Tasmania. These snakes are highly variable in their colour, often banded like those on a tiger, and forms in their regional occurrences. All populations are in the genus Notechis, and their diverse characters have been described in further subdivisions of this group.
A genus of large venomous snake in the family Elapidae restricted to subtropical and temperate regions of Australia. Recently, the tiger snake has migrated to the U.S. Tiger snakes are a large group of distinct populations, which may be isolated or overlapping, with extreme variance in size and colour. Individuals also show seasonal variation in colour. The total length may be up to 2.1 meters (7 ft). The patterning is darker bands, strongly contrasting or indistinct, which are pale to very dark in colour. Coloration is composed of olive, yellow, orange-brown, or jet-black, the underside of the snake is lighter and yellow or orange. The tiger snake uses venom to dispatch their prey, and may bite an aggressor; they are potentially fatal to humans. Tolerant of low temperatures, the snake may be active on warmer nights.
Tiger snakes give birth to between 12 to 40 live young, an exceptional record was made of 64 from an eastern female.
Tiger snakes are non-aggressive, and will often give warning strikes with a closed mouth. When threatened they will flatten their body and raise their head above the ground in a classic pre-strike stance.
The widely dispersed populations (sometimes referred as polymorphs) show some conformity in their descriptions, but these characters may be shared by separate or adjacent groups. Tiger snakes are also identified by the region or island in which the forms occur, which is prefixed to a common name.
The Common tiger snake has a flat blunt head, slightly distinct from a robust body. Body capable of being flattened along entire length when snake is agitated or basking. Average length 0.9 m, maximum length 1.2 m but has been recorded at 2.0 m (or ~6.6 ft). Highly variable in colour, with base colours of brown, grey olive, green with lighter crossbands usually of creamy yellow. Occasionally unbanded specimens are found. Scales appear like overlapping shields, especially around the neck. Ventrals number 140 to 190, subcaudals 35 to 65, mid-body in 17 or 19 rows and the anal scale is single.
The Western tiger snake has a head that is distinct from its robust body, and grows to 2.0 m in length. Dorsally, steel-blue to black with bright yellow bands; unbanded specimens occur. The ventral surface is yellow, tending black towards the tail. Midbody scales are in 17 or 19 rows, ventrals number 140 to 165, subcaudals 36 to 51 (single) and the anal scale is single (rarely divided).
Chappell Island tiger snake, shows fangsThe Chappell Island tiger snake has a blunt head distinct from a robust body. The giant of the tiger snakes species, averaging 1.9 m (over 6 feet) in length. Dorsally, olive-brown to almost black, sometimes with lighter crossbands. The ventral surface is usually lighter in colour. Juveniles are banded. Mid-body scales are in 17 rows; ventrals number 160 to 171, subcaudals 47 to 52 (single), and the anal scale is single. These snakes are quite docile.
The King Island and Tasmanian tiger snakes each have a blunt head distinct from a robust body. Younger snakes may be slimmer and similar to other tiger snakes, eventually growing up to 1.5 m in length. Dorsally, may be jet black, jet black with lighter crossbands, grey with black flecks forming faint bands or an unbanded grey or brown. The ventral surface is usually a lighter colour. Midbody scales are in 19, 17 or sometimes 15 rows, ventrals number 161 to 174, subcaudals 48 to 52 (single) and the anal scale is single. Tasmanian tiger snakes tend to be quiet snakes, probably due to the lower temperature range they inhabit.
The Peninsula tiger snake has a blunt head distinct from a robust body. Averages 1.1 m in length. Roxby Island specimens are much smaller, averaging 0.86 m in length. Dorsally, generally jet black, sometimes with white or cream markings around the lips and chin. On Kangaroo Island, specimens are highly variable in colour, often exibiting banding and uniform brown colours. The ventral surface is dark grey to black, with some specimens on Kangaroo Island even possessing red bellies. The ventral surface becomes much lighter prior to shedding. Juveniles nearly always have banding. Mid-body scales are in 17, 18, 19 and rarely 21 rows, ventrals number 160 to 184, subcaudals 45 to 54 (single) and the anal scale is single.
The subspecies Notechis ater ater, found away from mainland Australia, is typically uniformly black.
As with most snakes, the colours vary widely between individuals and are an unreliable means of identifying subspecies. Accurate identification is best performed with a venom test kit or scale count.
King Island tiger snake, with barely visible banding, near Petrified Forest on King Island, AustraliaTiger snakes are found in coastal environments, wetlands, and creeks where they often form territories. Areas with an abundance of prey can support large populations. The species’ distribution extends from the south of Western Australia through to South Australia, Tasmania, up through Victoria, and New South Wales. Its common habitat includes the coastal areas of Australia.