Two-thirds of a birds egg was found in the undergrowth around some large trees - no nest was visible. Can anyone tell from the way it was cracked what caused this? Also what bird species it belongs to?
No identification made yet.
No interactions present.
It is not always possible to identify eggs from single picture, as size and colour play their part. I will try an answer though, based on your description and judging the size of egg by the leaves; I going for Blue Tit/Great tit. Did you notice if eggs had red or rust coloured flecks/spots? It appears to have been chipped away from inside, so an natural hatching. This is my opinion not a yes it is.
Based on the leaf in the 'photo, I am guessing it is around an inch across and white - if so, it is a collared dove or wood-pigeon egg (or feral pigeon) - their eggs are sufficiently different in size to be able to tell.
From the way in which it has "broken", it almost certainly hatched.
Looking at picture again I agree about size of egg, I think wood pigeon has it.
There were no red/rust coloured flecks - the egg shell was completly white and was about 4-5cm in length. Thank you for your responses - I'm glad to hear it was a natural hatching.
Lat/Lng: 53.3, -1.6
OS grid ref: SK3286