Hi,
Not certain about this one by any means but here are my thoughts on it.
The egg eating snake most usually shown has several evolutionary adaptations for that diet.
It has sharp spines projecting downwards inside its throat which it uses to peirce the eggshell. It then squeezes the contents out of the shell and swallows them and spits the eggshell back out in a neat little package.
So an egg eating snake doesn't eat the eggshell at all.
I have no idea if this is because of possible digestion probelms with bits of sharp eggshell that take a while to digest ( if they ever do ) or simply because there isn't enough goodness to be gained from the eggshell to make it worth eating.
I have definately heard of people using egg yolk in preparing liquid diets to tube feed a weak snake so there is no problem with the eggs contents I think.
But as to getting the snake to recognise it as food and eat it on its own shell included? I'm not sure I see enough benefits to even think of trying it personally. And that's assuming there are no possible downsides or problems. :weirdface
I have fed chicks to BP's on occasion but if it decided that was all it wanted to eat could you supply enough of them for the snakes needs?
I would be curious to know if there were any reports of BP's eating eggs in the wild.
dr del