They may be dead, they just be a bit chilled, worth a chance though. Reptile eggs often stick in a clump because of the mucus secreted when layed and their leathery skin. Fox, rats, crows, badger, etc, may all be a culprit in moving them. I'd love to have grass snakes or slow worms on my allotment but we just don't get them round here and the small populations that are known about are a good 30 miles away at least and kept hush hush.