Birdbrain often describes an individual who is not very smart. Birdbrain dives into bird characteristics and behavior to investigate if there is truth behind this common expression. Easy-to-read text, vivid images, and helpful back matter give readers a clear look at this subject. Features include a table of contents, infographics, a glossary, additional resources, and an index. Aligned to Common Core Standards and correlated to state standards.-- Source other than Library of Congress.