What is in this blood substance in this shell-less egg?!?

[LaFleche]

Did you or a neighbour put out rat/mice poison lately?

 

[Jmccauley]

Did you or a neighbour put out rat/mice poison lately?

Nope. I have no neighbors & am adamant about not using poisons! I'm at a loss. And what is stranger, my flock is still all accounted for and appearing healthy. I really expected to have a dead chicken in the coop this morning or at least an ill one.

 

[Jmccauley]

I'm wondering if I've found out what girl it was while this hand acted normal every time I seen her today this evening when I went to check on everybody she was roosting here and instead of her normal roost bar and her vent does have some mess on it.