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The Proposed Action Plan for the Conservation of Butterflies in Hong
The Proposed Action Plan for the Conservation of Butterflies in Hong

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... - A member of the Milkweed (MW) family (Asclepiadaceae) - An invasive weed from Southern Europe. - Escaped cultivation as an ornamental in Massachusetts. - Invades new areas through seed dispersal and deep rhizomes. - Found in natural and disturbed areas where it out competes and eliminates native v ...
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Monarch butterfly migration



Monarch butterflies (Danaus plexippus) perform annual migrations across North America which have been called “one of the most spectacular natural phenomena in the world"".Starting in September and October, eastern/northeastern populations migrate from southern Canada and the United States to overwintering sites in central Mexico where they arrive around November. They start the return trip in March, arriving around July. No individual butterfly completes the entire round trip; female monarchs lay eggs for the next generation during the northward migration and at least five generations are involved in the annual cycle.Similarly, the western populations migrate annually between regions west of the Rocky Mountains including northern Canada and overwintering sites at the coast of California.Monarchs also perform small distance migrations in Australia and New Zealand. There are also some populations, for instance in Florida and the Caribbean, that do not migrate.
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