The warm weather has brought out the bees and they are in the garden in large numbers, feeding off the helebores (see pic), winter-flowering honeysuckle and crocuses (sp?). The pollen from the crocuses is very noticable on their back legs - it's bright orange. Like saffron - which are the stamens from a type of crocus (I think).
Another new odd behaviour: sucking at wet oak leaves. Now I know they need water. All living creatures do. Bees use it to dilute the honey that they take from the comb. But here's the odd thing: I have put a tray of water in front of the hive, complete with smooth rocks, so that it's easy to land and drink. But few of them use this - preferring to find a warm spot with some damp oak leaves and have a good old suck.