I'd never let Photon run on a beach like this if there were shorebirds about. The next day in the same spot there were Semipalmated Plovers, but by then her 11-year-old muscles were pretty tired so she didn't mind the leash. I posted a whole set of her on flickr: http://www.flickr.com/photos/48014585@N00/sets/72157622190458422/
