Migration can take very different forms in different species, and has a variety of causes. As such, there is no simple … See more

Different kinds of animals migrate in different ways.
Approximately 1,800 of the world's 10,000 bird species migrate long distances each year in response to the seasons. Many of these migr… See more

Scientists gather observations of animal migration by tracking their movements. Animals were traditionally tracked with identification tags such as bird rings for later recovery. However, no information was obtained a… See more

Before animal migration was understood, various folklore and erroneous explanations were formulated to account for the disappearance or sudden arrival of birds in an area. In Ancient Greece, Aristotle proposed t… See more

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• Aidley, D. J. (1981). Animal migration. Cambridge University Press. ISBN 978-0-52123-274-6.
• Baker, R. R. (1978) The Evolutionary Ecology of Animal Migration. Holmes & Meier. ISBN 978-0-34019-409-6.… See more