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Revert and alter. See talk shortly.
'''Migration''' is the movement of people or animals (particularly [[bird]]s) to live in another place.
'''Migration''' is the movement of people or animals (particularly [[bird]]s) to live in another place.
With animals, migration is usually a periodic movement to better climate or feeding areas. It is typically repeated in a similar manner each year.
== Animals ==
Animal migration presents marvellous examples of good design: how do many creatures find their way to their destination?
Each year, a few towns in [[California]] are greeted by the arrival of tens of thousands of [[monarch butterfly|monarch butterflies]]. [[Pacific Grove]], California, is the peculiar destination of a huge quantity of such butterflies each year.
Each year, a few towns in [[California]] are greeted by the arrival of tens of thousands of [[monarch butterfly|monarch butterflies]]. [[Pacific Grove]], California, is the peculiar destination of a huge quantity of such butterflies each year.
The [[PBS|Public Broadcasting Service]] provides a description of the phenomenon, without any possible explanation.<ref>http://www.pbs.org/wnet/nature/alienempire/voyagers.html</ref> This report notes that one butterfly was tracked along a 1,870 mile route, from [[Ontario]] to [[Mexico]]. Its actual flight distance could easily have been two or even three times greater, because butterflies do not fly in straight lines.
The [[PBS|Public Broadcasting Service]] provides a description of the phenomenon.<ref>http://www.pbs.org/wnet/nature/alienempire/voyagers.html</ref>
This report notes that one butterfly was tracked along a 1,870 mile route, from [[Ontario]] to [[Mexico]]. Its actual flight distance could easily have been two or even three times greater, because butterflies do not fly in straight lines.
How do the [[butterfly|butterflies]] navigate themselves? This confounds purely materialistic explanation.
How do the [[butterfly|butterflies]] navigate themselves? This ability has confounded scientists for a long time, although they now have some understanding of the incredible design features involved.
But the question remains: How did these creatures acquire this ability in the first place?
Materialistic explanations are inadequate.
In [[Theory of evolution|evolutionary]] terms, butterflies are merely [[insect]]s far less developed than [[human]]s. But most humans could not even [[navigation|navigate]], unaided, 1,870 miles to a certain destination.
In [[Theory of evolution|evolutionary]] terms, butterflies are merely [[insect]]s far less developed than [[human]]s. But most humans could not even [[navigation|navigate]], unaided, 1,870 miles to a certain destination.
Even more remarkable is how many butterflies die during the migration, and yet their offspring continue on the same journey nevertheless.
Even more remarkable is how many butterflies die during the migration, and yet their offspring continue on the same journey nevertheless.
===References===
== Humans ==
Migration is typically done by individuals, families, or extended families going to live in another [[country]], but there have been many periods of mass migration, where large numbers of people move to another country.
This is often instigated by oppressive regimes or [[natural disaster]]s, such as [[drought]].
== References ==
{{reflist}}
== See also ==
* Poirier, Jules, [http://creationontheweb.com/content/view/763/ The magnificent migrating monarch] ''Creation'' 20(1):28–31, December 1997.
[[category:zoology]]
[[category:zoology]]