Christmas is not usually the time for buzzing bees, but they have been swarming in much earlier than usual this year, said the Woodland Trust.
Volunteers for the conservation group recorded five spottings in December and 56 in January, which is unusual.
Bees can be a tell-tale sign of climate change because they usually hibernate in the cold, but the early flowering of plants suggest change too.
The Trust released its findings for the start of National Science Week.
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