The first sunny day of 2020 and Buff-tailed Bumblebees are buzzing in my garden around the flowering Mahonia shrub.Along with other flowering plants at this time of year this nectar enables species such as the Buff-tailed to remain active throughout the winter together with the mild temperatures in the south of England.The following photo's are of a worker bumblebee,probably one of up to one hundred at a winter colony maintained by the queen bumblebee.