At the end of last year we changed the gallery software and discovered that the old software had a bug, which meant that photos with the same filename (i.e. sparrow.jpg) could get mixed up so some members would have photos that belong to other members.
Unfortunately, the only way we can fix the issue is to delete the mixed up images. We've now done this for most of the problem photos, but if you spot any more, please click on the

icon under the photo to report the image to us. You'll then need to re-upload the images if you'd like them to go back into the gallery.
Sorry for the inconvenience
Stuart