S2·E9 Dizzy's Birdwatch

Bob and Lofty come across a bird's nest with an egg in it. Wendy explains that they can't move the nest. Dizzy volunteers to watch it. When the egg hatches, Dizzy doesn't want to leave. Bob needs some cement mixing so Dizzy quickly goes to do so. She goes back to the yard just in time to see the bird learn to fly.