bird structure and function (3 Questions)

Make sure to write in your own words and in complete sentences. use the book to help you answer the questions(No outside resources) . pages 154-157. https://intervisualtechnology.us/uploads/PDFs/Zool… . 1) How are a bird’s wings powered? 2) How do birds keep theor lungs filled with oxygenated air? 3) Give an example of bird behavior that shows their relatively great inteligence?