From May, when I encountered my first ever Dunlin in breeding plumage (I see them every year during fall migration in their "winter" plumage). This individual came really close, even closer than this when all I could do was watch. Even at f/10 it did not fully cover the dof on the subject, but I am still very happy with thee nice close ups it provided. What a wonderfully coloured shorebird these guys are when in peak plumage!
Canon 7DII + 500mm f/4 II + 1.4TC III, manual exposure, evaluative metering, 1/250s., f/10, ISO 1600, natural light, handheld, just about FF (~85-90% FF), cleaned up the reflections in the eye, and removed a couple of minor specks onthe bill.