To compare stocking density, you'd need 4,000,000 bees to equal one cow, or 600,000 to equal a goat. Then again, bees don't eat grass or forbs, so this number is essentially useless.
You could use this information to add context to our past Thursday Fun Fact where we discuss how many trips a bee takes to make a pound of honey. This, of course, uses the concept of "adding context" in a very, very loose sense of term.