The tree frog is a specialist of warm, lowland landscapes with abundant ponds and scrubby vegetation. In northern Europe, it is found in open and often surprisingly dry habitats, such as bramble scrub and even dunes. Eggs are laid in shallow, fish-free ponds with fairly dense emergent plants. Breeding begins in late spring, later than Britain’s brown frogs, and continues into early summer. By day, individuals are often basking among vegetation; at night, males gather in choruses, producing a loud, distinctive call that carries across the landscape for over a mile.