Reported again this morning, but apparently not in afternoon.
25-Apr-2109
An Alpine Swift has been present most of the day at Ham Wall, between the old railway bridge and the 1st viewing platform. I saw it between 16:30 and 17:00 mostly feeding over the south-side of the track (Godwins area) together with 5 Common Swifts and lots of House Martins. Still being reported from here at 19:30 hrs.
Click on this link for a large crop photo… https://pbs.twimg.com/media/D5BR3KuW4AQ9NT8.jpg