Natterjack toad  (Bufo calamita)

Biology

Natterjack toads emerge from hibernation later than frogs and common toads. Depending on the weather this can be as early as March and as late as June. The males make their surprisingly loud croaking call in the afternoon and evening and often after rain. Shortly after emerging they begin their breeding cycle. Mating takes place in sun-warmed ponds and then males and females leave the water separately. Spawning occurs in shallow water, each female producing from 1500 to 7500 eggs. These hatch in about a week and the tadpoles take a further 3 - 8 weeks to metamorphose into toadlets.

Adults retreat into burrows during warm weather and emerge at night to feed on moths, woodlice and other insects. Along their coastal range, they have been known to follow the strand-line to find food such as sandhoppers and other marine invertebrates.

Hibernation takes place in burrows, usually excavated by the toad, but they are known to use the burrows of other animals such as rabbits, rodents and even sand martins.