Wow - great ideas! We have eight 2.5 month old hens, so no fertilized eggs and, actually, no eggs at all! And we are not good farmers so would never dream of butchering a chicken. I could give a rooster away to someone who would eat him, but could not actually do the deed. Embarrassing, but true...
OK, so refrigeration and eggs are out. What about "Which animal learns faster, a chicken or a dog?"
V