Interesting topic, especially since I am puzzled about it myself. However, my situation doesn`t quite fit with others` experiences.
I was gifted with two old ladies and one teenage rooster six weeks ago.
Am delighted they like living together and with me. They are delightful little birds.
During these last six weeks we had two incidents of egg eating. I wasn`t expecting eggs from the sweet old ladies. But it turned out one of them lays two or three eggs a week, some of them shaped perfectly round [never saw a round egg before].
A month ago one of the eggs was eaten inside the coop - kind of a mess to clean up.
I started checking the coop for eggs and removing them. One day the hen who lays the eggs started pecking one open after I put it on the ground outside of the coop. The other hen and the cockerel joined in, and I watched in fascination as they ate the egg`s insides and some of the shell together.
Since that day I always put an egg on the ground to see if the chickens want to eat it, then if they don`t, I take it. They get first pick.
A week ago all three "ganged up" on an egg on the ground, pecking at it enthusiastically. They weren`t able to break it as before and lost interest in it.
I have no idea why they were able to peck one egg open to eat it but not another one....
I suspect they need it`s nutritional contents, the two hens at least, but that`s only my take on it.
Would be interested in hearing others` opinions.
What I do now is preparing eggs for the little ones to eat - I have boiled them and chopped them up or scrambled them, and they like to eat them both ways.
But I don`t think "killing" three eggs over a six-week period is a persistent problem.
birdfreak