A long time ago, I came across a picture claiming to be an eggshell from an egg with evidence of hatchling behavior.
It looked fairly legitimate - it does really look like the behavior of a small creature pecking out of the shell since the crack is focused on such a small point. My question is, is it possible to tell on smaller or larger eggshell fragments?
Take smaller fragments that have cracks running across them like this one:
or large entire portions of the egg like this one:
What would likely indicate a shell fragment was pulverized by the elements, crushed by hatchling feet, or was actually cracked during the hatching process?