egg found in planter

Question
This year and last year I have found one light blue/green egg buried in a planter around my house.  Last year I thought it was leftover Easter egg, but now I'm wondering if they might be reptile eggs.  From reading other posts, I'm afraid I probably handled it too much for it to have survived.  In Buffalo in early October, is it likely to be a viable egg?  Is it worthwhile to rebury it?  Do you have any idea what sort of animal it might be?  It's not leathery but maybe a bit softer in feel than a chicken egg.

Answer
 All reptile eggs are shades of white that I know of...and I even asked asked around to other experienced herpers I could reach to verify this.  There are birds that lay blue to green eggs, like robins, flycatchers and a species of hen called aracunas.  However, reptile eggs laid white and buried in certain soils can take on colorations from the minerals in those soils with time.