Yes, there certainly seemed fewer terns to me this week than the week before, so probably some have left, particularly Roseate - I only counted two last Thursday with 20 the week before and more than 100 in the first week of August.
Bridled are still around, I counted 30 this week with 40 the week before. But they go off fishing during the day sometimes, they don't fish around the Rock like Black-naped but go off to the south of Lamma Island where they have a regular fishing ground.
