When are reptiles active ?

Reptiles, such as adders, grass snakes, common lizards and slow worms, rely on the heat from the sun to warm their bodies in order to become active, but if it becomes too hot will overheat and seek shelter from the midday sun.

Therefore, these creatures are only active during the warmer months, typically from March to October, but are easiest to spot when the weather is not above about 18 degrees C [ so June and July are often too hot once the sun is fully up]. During suitable times, they can sometimes be seen basking in the sun on south-facing banks, or rocks, or underneath hotspots, such as discarded corrugated iron sheets. They hibernate throughout the colder, winter months, during which time they seek refuge underground or, for example, in log or rubble piles, so called “hibernaculum”.

NWS can undertake reptile surveys on sites, that are proposed to be developed. Where they are discovered on a site, we can advise clients on any mitigation required, for example reptile translocations or habitat creation.

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