Here in southern Scotland I mostly just see Sandwich Terns, but I picked this bird out this morning due to its slower, more graceful flight. I couldn't see a black tip on the bill, so by my reckoning that makes it an Arctic Tern - but is it really that simple? Apart from one sighting of a Common Tern a few years ago I only have experience with Sandwich Terns; so I thought it best to be cautious before potentially digging out the life-list 
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Confirmation (or correction) greatly appreciated. Pics were taken in low light and have been slightly adjusted.
...Confirmation (or correction) greatly appreciated. Pics were taken in low light and have been slightly adjusted.
