First really hot day of this summer. Yesterday was also good but not as hot as today. I mention this as at about 9.40pm just as we got back was entertained by 7 swifts flying up to the eves and one entering a new site and several clinging onto the wall just below the eves. The four chicks have been suffering from the heat, mouths open panting most of the day. They also have moved around getting nearer the fresh air. A clip from each nest.