Perching practice

There's the guinea keets this morning, practicing perching on the feet of the guinea sky-coop.  They grow by the day.  HW has raised the issue of what happens when all these guineas grow up.  Case in point, when they start hollering about something, it's "How do you think 20 of those are going to sound?", and "What happens when all those guineas decide to sleep on top of the coop?" and the most difficult:  "So, if you had two hens this year and they had 16 babies, then what happens next year when all those hens are grown up, and they have....how many babies are they gonna have?"