Birds - Class Aves
Birds (Class Aves) are unique creatures having wings, feathers, hollow bones, and other adaptations for an arial lifestyle. Flight consumes a great deal of energy and consequently these warm-blooded animals have high metabolic rates. Many of their bones are fused for strength and stability.
Understanding Migration
Migration, like flight, is a phenomenon not limited to birds. In general, migration is the annual movement of animals between their breeding grounds and wintering sites. Migration occurs in response to changing seasons and is predictable and repeated each year.
Migration, like flight, is a phenomenon not limited to birds. In general, migration is the annual movement of animals between their breeding grounds and wintering sites. Migration occurs in response to changing seasons and is predictable and repeated each year.
Characteristics of Birds
Birds are vertebrates, which means that they are among those animals that posess a backbone. They range in size from the minute Cuban Bee Hummingbird (Calypte helena) to the grand Ostrich (Struthio camelus).
Birds are vertebrates, which means that they are among those animals that posess a backbone. They range in size from the minute Cuban Bee Hummingbird (Calypte helena) to the grand Ostrich (Struthio camelus).
Glossary of Bird Terms
A collection of specialized words (and links to their definitions) that are commonly used to describe various aspects of birds such as their behavior, evolution, anatomy, life history, adaptation, and conservation.
A collection of specialized words (and links to their definitions) that are commonly used to describe various aspects of birds such as their behavior, evolution, anatomy, life history, adaptation, and conservation.
Quiz: An Introduction to Birds
Test your knowledge of basic bird biology and classification by taking this online quiz.
Test your knowledge of basic bird biology and classification by taking this online quiz.
Quiz: Can You Identify These Birds?
Put your bird identification skills to the test in this quiz.
Put your bird identification skills to the test in this quiz.
Feather Anatomy and Function
Feathers are a unique adaptation of birds. Feathers are made up of keratin, an insoluble protein that is also found in mammalian hair and reptilian scales.
Feathers are a unique adaptation of birds. Feathers are made up of keratin, an insoluble protein that is also found in mammalian hair and reptilian scales.
The Evolution of Flight
The story of the evolution of flight is not one limited to birds. Flight evolved not only in birds, but also in insects and mammals.
The story of the evolution of flight is not one limited to birds. Flight evolved not only in birds, but also in insects and mammals.