How do birds migrate from one country to another crossing thousands of miles of sea non stop?
Posted in amazing birds by: adminDont you find that amazing? Has any studies been done in this area?
The pressure to migrate comes from seasonal food scarcity.Bird movements include those made in response to changes in food availability, habitat or weather.When birds come together to search for food, the group is more likely to find a new patch of food than is one lone individual, she said. "Flocking can be an alternative way to deal with food shortages."
The advantage of the migration strategy is that, in the long days of the northern summer, breeding birds have more hours to feed their young on often abundant food supplies, particularly insects. As the days shorten in autumn and food supplies become scarce, the birds can return to warmer regions where the length of the day varies less and there is an all year round food supply.
They usually fly, though I’m sure that some must swim or walk parts of the way.
on February 28th, 2010 at 7:58 pmThere have been many hundreds, if not thousands, of studies of bird migrations.
I feel sure that a quick enquiry through google would give you rather more information than you would be willing to cope with.
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I’m not sure about the studies. But I do know they’re just built to fly for that distance. They have long wings to carry their bodies. And most of them weight is actually their wings to support their structures. Sadly, I’m sure not all of them make it, and some might get sick or caught in a storm along the way. They’re just born with the equipment and knowledge to do so.
Hope this helps!
on February 28th, 2010 at 8:18 pmReferences :
I’m sure you knew that they fly etc; They navigate by the sun and moon and the slip stream, plus some will remember the landmarks from previous flights so it’s follow the leader so to speak.
on February 28th, 2010 at 8:24 pmReferences :
The pressure to migrate comes from seasonal food scarcity.Bird movements include those made in response to changes in food availability, habitat or weather.When birds come together to search for food, the group is more likely to find a new patch of food than is one lone individual, she said. "Flocking can be an alternative way to deal with food shortages."
on February 28th, 2010 at 8:36 pmThe advantage of the migration strategy is that, in the long days of the northern summer, breeding birds have more hours to feed their young on often abundant food supplies, particularly insects. As the days shorten in autumn and food supplies become scarce, the birds can return to warmer regions where the length of the day varies less and there is an all year round food supply.
References :