Best Places To Watch Massive Autum Bird Migrations
source: http://blog.gaiam.com/blog/five-billion-birds-on-the-wing-where-to-watch-autumn-migrations/
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Every autumn, more than 5 billion birds migrate across North America, crossing the U.S. at rates of tens of millions a day. Despite what most people think, birds don’t migrate because the weather is getting too cold, but because they can’t find enough to eat. As winter settles in, insects die and a mantle of snow and ice covers other food sources. Birds with a steady food supply, such as city pigeons, will often remain where they are; others head south when frost threatens.
Bird migrations are facing growing harm from human impacts, especially habitat destruction that inhibits their ability to find sufficient nesting and feeding grounds for stopovers along their route. Climate change is also disrupting bird migration patterns. However, there are still outstanding places to watch them as they congregate during their annual journeys. You don’t have to be a “birder” to be moved by the spectacle of hundreds, even thousands, of birds massed together feeding or taking to the air in synchronized flight.
http://blog.gaiam.com/blog/five-billion-birds-on-the-wing-where-to-watch-autumn-...
Bird migrations are facing growing harm from human impacts, especially habitat destruction that inhibits their ability to find sufficient nesting and feeding grounds for stopovers along their route. Climate change is also disrupting bird migration patterns. However, there are still outstanding places to watch them as they congregate during their annual journeys. You don’t have to be a “birder” to be moved by the spectacle of hundreds, even thousands, of birds massed together feeding or taking to the air in synchronized flight.
http://blog.gaiam.com/blog/five-billion-birds-on-the-wing-where-to-watch-autumn-...
