In this evocative picture book, a child wanders through nature with one question: what makes a bird a bird? Is it feathers? What about a beak? Could it be wings? With each possible answer, more questions arise. If laying eggs makes a bird a bird, what about turtles, snakes, or fish? If flying is the thing, are penguins still birds? Ultimately, the narrator concludes that a bird is a bird, with or without feathers, beaks, or the ability to fly!

Accompanied by gorgeous illustrations and subtle STEM content, this thoughtful picture book invites readers to think about what makes us human and how we categorize and identify the world around us.