When and How do Birds Migrate
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Description: Article discussing the varying strategies adopted by birds in finding their way when taking part in their long distance journeys.
The Earthlife Web - When and How do Birds Migrate Birds tend to commence migration in large numbers only when they have a favourable tail wind. In North America the winds north in spring and south in autumn are ideal to assist seasonal migrations. Once started however only very bad weather will stop them. Many birds fly high when migrating because of prevailing winds at higher altitudes and also because the cold at these altitudes helps them disperse all the heat being generated by their flight muscles. Many species of wildfowl fly at 6,000m and some have been observed flying at 8,000m, 86mph in temp = -48 degrees C.
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| Page title: | The Earthlife Web - When and How do Birds Migrate |
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| Description: | Bird Migration 2, When do birds migrate and How do they know where they are going |
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| Date | Creation Date: 08-jun-1999 Expiration Date: 08-jun-2020 |