Buzz by Eileen Spinelli, illustrated by Vincent Nguyen

From chapters.ca:
Buzz, a spunky little bumblebee, has a problem flying after coming across the information that bees should not be able to fly. What happens when believing you can't keeps you from doing what you can? And what will it take to make Buzz gather the courage to fly again? Kids and parents alike will appreciate Buzz's dilemma - and eventual triumph!