Ms. Frizzle's class is learning about birds. They want to see a real nest, so Ms. Frizzle says it's time for a field trip. The kids get on the Magic School Bus, and pay a visit to a real robin's nest! But then Carlos gets a little too close to some baby birds. It's the Magic School Bus to the rescue! Take off with Ms. Frizzle's class and find out all about birds in spring.