We only occasionally get these little heath bumblebees in our garden. As the name suggests they are more common in upland areas, particularly bogs and heaths but they are recorded in gardens too. I took these photos on the shores of Lough Cullin here in County Mayo, last weekend.
There was a couple of queens and one very small worker, who practically dissappeared into the flowers as it searched for pollen and nectar.
Heath bumblebees are one of the smallest of Ireland’s white tailed bumbles and they have three yellow brands making them look quite yellow.