There is a Least Tern nesting site on Plum Island (Massachusetts) which is part of a state park. The dunes where the Terns nest are marked off so that people using the beach for swimming, sunning and fishing won’t get too close to the birds. I am careful about how close I get to the perimeter when I am photographing since some birds will nest very close to the edge. The birds will let you know when are getting close to a nest and you just need to back off and move further along to get back to the perimeter again. This Tern is giving me the eye to let me know I am approaching his territory. I took his photo and veered off to continue walking up the beach without encroaching on his space.
Birds in My Viewfinder 