Bees

Bees

Observation - Bees - UK and Ireland. Description: Large bee seen both flying and settled, with smaller bee on its back. Is it possible that they are mating? What time of year do bees usually mate? If not mating, then can anyone say what is happening here please? Also large number of parasites around thor

Large bee seen both flying and settled, with smaller bee on its back. Is it possible that they are mating? What time of year do bees usually mate? If not mating, then can anyone say what is happening here please? Also large number of parasites around thorax of larger bee (female?)