Biology

Little is known about the natural ecology and behaviour of this elusive snake. Primarily nocturnal, juveniles and adult males in particular are partially arboreal. Their diet is composed exclusively of lizards, some of which are also endangered species endemic to Round Island (7). The breeding season is thought to begin in April although young have been observed at practically all times of the year. A clutch of up to 12 soft-shelled eggs is laid, perhaps amongst leaf litter or in a hollow palm trunk, and may be attended by the female (7). The incubation period is about 90 days, unusually long for a snake; young are born weighing less than 5 grams and are bright orange in colour (6).