11) What do female birds lay?
12) How do birds communicate?
13) What has the largest eyes of any land animal?
14) What bird has the longest wingspan of most birds in the world?
15) What is one way to help protect bird habitats?
16) How many species of birds are there?
17) Which bird is the national bird of the United States?
18) What is the smallest bird in the world?
19) What is the heaviest bird in North America?
20) What type of bird has a curved beak and a long neck?