By Melissa C. McDade
Grzimek's scholar Animal existence source: Birds deals readers complete and easy-to-use info on Earth's birds. Entries are prepared by way of taxonomy, the technology by which residing issues are categorised into similar teams. every one access contains sections on actual features; geographic variety; habitat; nutrition; habit and copy; animals and folks; and conservation prestige. kin entries are by way of a number of species bills and a spread map and picture or representation for every species. Entries finish with a listing of books, periodicals, and websites which may be used for additional study.
Each quantity of Grzimek's scholar Animal existence source: Birds incorporates a pronunciation consultant for medical names, a word list, an summary of birds, a listing of species within the set by way of biome, an inventory of species via geographic situation, and an index. The set has 640 full-color maps, photographs, and illustrations to brighten up the textual content, and sidebars offer extra proof and comparable information.
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Extra resources for Birds
For example, hawks have sharp talons for hunting and ducks have webbed feet to help them swim. Some of the birds that spend most of their lives in the air or on the water are not good at walking. Most birds have four toes, but some have three, and ostriches have only two. BIRDS’ SENSES Sight For most birds, sight is their best sense. They can see much better than humans, and they can see in color, unlike many mammals. Rectrix Filoplume Remex Bristle Down A bird’s stiffest feathers are the remex feathers of the wing and the retrix feathers of the tail.
Words to Know xxxi Generalist feeder: A species that eats a wide variety of foods. Genus (pl. genera): A category of classification made up of species sharing similar characteristics. Granivore: Animal that primarily eats seeds and grains. Grassland: Region in which the climate is dry for long periods of the summer, and freezes in the winter. Grasslands are characterized by grasses and other erect herbs, usually without trees or shrubs, and occur in the dry temperate interiors of continents. Gregarious: Used to describe birds that tend to live in flocks, and are very sociable with other birds.
Deforestation: Those practices or processes that result in the change of forested lands to non-forest uses, such as human settlement or farming. This is often cited as one of the major causes of the enhanced greenhouse effect. Distal: Away from the point of attachment. Distraction display: Behaviors intended to distract potential predators from the nest site. Diurnal: Refers to animals that are active during the day. Domesticated: Tamed. Dominant: The top male or female of a social group, sometimes called the alpha male or alpha female.