I always say its unusual to get a double lifer day. Largely because it's fairly unusual for me to get any new species on my British list. Not because I'm some big lister you understand but just because I've seen enough that without some effort, it's hard to see anything new. Today, I hit a deer, saw a Mockingbird in Devon and an American Herring Gull in Cornwall. All new experiences for me! Some were better than others and the Gull is documented above!