Brown Tree Snake

• On Guam it wiped out ten of the twelve native forest bird species in barely three decades: with no predators and no competition, it reached densities of thousands of snakes per square kilometre and emptied the forest of birds entirely.
• Its climbing up power poles causes recurrent blackouts on the island, at an economic cost of millions of dollars a year.
• The United States has gone so far as to drop dead mice laced with paracetamol, which is lethal to these snakes, from helicopters in an attempt to control the Guam population.

Skeleton type

Vertebrate - internal bony skeleton (reptile)

Habitat and environment

Forest, scrub, plantations and urban areas of Australia, New Guinea and the Pacific islands

Sexual maturity

3 years

Gestation / incubation

2.5 months

Litter / clutch size

6 eggs

Sources consulted: Wikipedia (es): Boiga irregularis

The pins mark the parks where its presence is documented.