During Saturday’s walk I was delighted to spot my first Red-tailed (Bombus lapidarius) and Tree bumblebees (Bombus hypnorum) of the year. The only food source in a 20-square-metre area (except for a few daisies on a patch of grass) was a flowering Mahonia bush, which had attracted not only those two bumblebees but also a Buff-tailed bumblebee (Bombus terrestris), as well as several species of fly, bee and hoverfly. It just showed how important flowers are for these early emerging insects.