Near the end of May, following some pretty horrible cold weather, Hugh reported having seen renewed activity at the triple box; a party of three, two of which seem to be using the left box and possible use of the right box and a group of seven visited on the 30th. Very strangely, of these seven, two broke off to attack the small black loudspeaker which dangles underneath the boxes. The speaker had been switched off for over a week, so this was very perplexing.

Hugh wondered if the swifts had mistaken the small black object for a hole, or perhaps a predator climbing up the wall to the nests. The swifts latched on in attack fashion and, when Hugh went up to the bedroom to reel it in, one of the swifts was still attached!