"Describes the nests of various types of birds and the materials used to build them, including the grass and twig nests of robins, the moss and spider web nests of hummingbirds, and the big stick nest
"Describes and identifies various bird eggs by their size, color, and pattern, including those of the American robin, the common loon, a cardinal, ostrich, owl, and a blue jay."
"Describes the basic structure of teeth including enamel, gums, and roots, plus it explains the various types of teeth such as incisors, canine teeth, and molars. Baby teeth and permanent teeth are al
