Found on drive way, empty and clean. Hole at each end of the egg.
No identification made yet.
No interactions present.
It is tricky to work out. You can put a coin (if you don't carry, say, a compass with a ruled edge) next to it for comparison.
I'd guess blackbird, in which case it should be a bit bigger than a 10p piece.
Lat/Lng: 51.381428, -2.357454
OS grid ref: ST752647