Typical mass market eggs are unfertilized, but eggs from smaller scale or hobby farms are usually fertilized. On a small scale, it's easier to keep the hens safe from wildlife with a rooster around, but on a large scale they're just a waste of feed. If you're curious, fertilized eggs have a tiny red dot in the egg white.
The hens are more relaxed with a rooster around, too, so they are good to have if you care about animal welfare. Just wish people stopped buying them in residential areas.
bees sometimes fly, like flies, but not exactly like flies; though they do fly. Bees do. Well, flies also fly, but differently. Not that differently if you don't care about such distinctions, but pretty differently if you do. I wish I could fly. That last one wasn't a bee fact. It was a me fact.
According to all known laws
of aviation, there is no way a bee
should be able to fly. Its wings are too small to get its fat little body off the ground. The bee, of course, flies anyway because bees don't care what humans think is impossible.