Interesting news that Britain's only poisonous snake, the adder (Vipera berus) is reported to now be active in this country throughout the year, rather than hibernating over the winter (https://www.theguardian.com/environment/2019/mar/06/adders-now-active-all-year-with-warmer-uk-weather). This seems to be a consequence of the altered weather on these islands. This species (with its capacity to hibernate and to produce live young) is actually the reptile with the widest geographical range. The change in behaviour, it is argued, could imperil these snakes if this emerge and are then hit by cold weather.
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