It’s hard photographing birds. They move fast in and out and up and down. It’s hard to focus even with auto-focus cameras but sometimes it’s possible. It just takes a lot of patience and trial and error. I’ve tried to photograph birds for quite a while with limited success. These came out pretty well I think.
This is a Common Tern I think, maybe an Artic Tern and was photographed on an island in Penobscot Bay Maine called Islesboro. Terns are a part of the subfamily Sterninae, of the family Laridae, which also includes gulls. Here’s another view.