Showing posts with label birds. Show all posts
Showing posts with label birds. Show all posts

Thursday, January 1, 2009

Where did all the Dodos go?

The Dodo was rather a stupid bird. Indeed, it was so stupid that it was named Dodo by the Portuguese when they discovered Mauritius - its home - in 1507. The Portuguese word doudo means stupid.

Mauritius is an island, 720 square miles in area and lying 500 miles to the east of Madagascar in the Indian Ocean. Until the arrival of man, with his attendant creatures such as the cat and dog, the dodo had been able to live in peace. It had no enemies, which was fortunate because it was big and clumsy and was completely unsuited to fleeing from danger. Its short legs were almost incapable of supporting the weight of the fat, round body (about the size of a swan's) and the ridiculously inadequate, stubby wings were of no use for flying.

Within 180 years of its discovery by the Portuguese, the dodo was extinct. Over the intervening years, several were brought to Europe alive, and one was to be seen in London in 1638. By 1680 the dodo had succumbed.

With the help of drawings and by the collection of bones gathered in Mauritius, an almost complete reconstruction has been made of the poor bird. It can be seen at the Natural History in London.

Mauritius is the only place in the world where the bird is known to have existed. A similar bird once lived on the neighboring island of Rodriguez, but this also has been extinct.

The phrase, "as dead as the dodo" is used to mean that something is very dead indeed.

Tuesday, December 30, 2008

When do Birds Migrate?

Millions of birds of many different varieties migrate at the end of summer. With unfailing regularity they leave the regions where they were born to fly to warmer climates for the winter. The following spring they return to their breeding grounds.

Each year these migratory birds travel as much as 20,000 miles, finding their way back on time with extraordinary precision. Some travel as individuals.

Migration is triggered off by the length of daylight, which apparently affect the birds' nervous system. When the days get shorter the birds receive the signal to leave for their warmer winter grounds, and when the daylight increases to a certain level, they receive another signal to return home.

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