The Eye of Horus!
Another pre-work cycle to Scapa to try and photo ringed terns but no luck again. There were ten sandwich terns and six common terns on the shore but I couldn't make out any rings. The usual disruption by the dark Arctic skua (extra), the other extra is a juvenile common tern with its mum. I saw this eye I the sky and have made this the main shot as a change from birds.