In our pile of sand solitary bees have settled down, called Ivy bees (Colletes hederae). The ones we see are females. They are born in September or October, at the time of ivy flowering. They take pollen from its flowers to feed their young. The sand suits them well because it’s easy for these little insects to dig deep holes in it. Each bee is solitary, it does not live in colonies. However as the bees are numerous, these groups are like ‘villages’ The Ivy Collet is a fairly long wild bee the same size as a honey bee. But she doesn’t make honey. Because it has no use for it. Once the eggs are laid, the female will die. And her descendants will be born a year later, when the ivy will flower. We’re not going to touch this pile of sand, to preserve the Colletes, which are precious for biodiversity.