Although I have heard 1 or 2 Chiffchaffs a day for the last week or so I don’t call them ‘officially back’ in my local area until I have seen one and heard a lot more per day. On Saturday I heard at least 12 when I was on a cycle ride and so I am now officially saying they are back in my patch.
Also I have seen another summer migrant in and around my local patch, the Swallow! I have seen a couple now, hopefully more and more will be arriving soon and they will start to nest. They seem to be very early this year, probably another side effect of the weird winter that we had, the first time I spotted one this year was the 31st of March!