Here is what I do to feed eggs back to the flock...
1. Break up to 1 dozen eggs in an old coffee can
2. Whisk/stir them up really good
3. Mix in dry powdered ingredients on hand (dry milk, flour, expired baby formula)
4. Mix in whole oats and let them soak
5. Mix in layer crumbles to finish soaking up egg liquid (alternatively, use stale bread/cat food/pastries/etc)
6. Stir good. This makes a dryish clumpy feed that the hens love.
Where do I get the stuff?
...I candle my eggs at around 2 weeks and all of the "clears" get fed back to the hens
...Crows break my duck eggs... sometimes I find them before the crows finish them
...All of my friends/relatives/coworkers save food items that would go to waste for me
...I visit the "backdoor" of a local grocer and collect items that would otherwise end up in the landfill
...I always have active craig's list want adverts looking for useful items
I figure this doesn't look or taste too much like eggs by the time I am done.