I was called out to treat a wasp nest today. When I got on to the roof there were maybe 30-50 bee's just landing on various roof tiles then flying off. None where going in to holes indicating a nest. I took some photos but they are rubbish. The bee's were in full sun so full of energy. Any ideas what species they are and what they were up to? I obviously left them well alone and told the owners to also. I've put the photos on as they may give some indication, also you can see the tile type (if that would make any difference). This was in Northwich, Cheshire.
Thanks in advance,
sorry about the quality of the photos, they were just far to quick!!!