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Reverted edits by Xanadu1 (Talk) to last revision by RJJensen
'''Migration''' is the movement of 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 marvelous 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.
The love
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 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.
Simply recounting migration illustrates its wonder:"<ref>http://www.si.edu/resource/faq/nmnh/buginfo/monarch.htm</ref>
{{QuoteBox|There are 12 known pockets of [[forest]]s in Mexico where Monarchs gather for the winter. They have been seen in the [[Sierra Madre Mountains]] of Mexico by the tens of millions, and estimated at 4 million butterflies per acre. All wintering sites are about 9,000 feet in elevation, generally cold with [[frost]]s at times. ... The majority of Monarchs from the east side of the [[Rocky Mountains]] overwinter in Mexico, but those from west of the Rockies overwinter in groves of [[Monterey pines]] or [[eucalyptus]] trees at sites along the California coast, from [[San Francisco]] to [[Los Angeles]].}}
Even more remarkable is how many butterflies die during the migration, and yet their offspring continue on the same journey nevertheless.
== 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]]