Potbird's reason for squatting

As suspected, Potbird's on a mission. If you look closely at the picture below, you can see offspring. Plus, it turns out there's an egg underneath her. How do I know? Because like a dorkus I accidentally hit the pot with my head as I was mowing the lawn, frightening the bejeebus out of her and forcing her to fly away. While she was debating what to do next, I took a peek in the pot and saw both Thing 1, as well as a Thing 2 still in the oven.