Thursday, May 7, 2009

Why are sloths green

Why are sloths green and how do they catch their prey if they are so slow?

Sloths are among the slowest-moving animals on Earth; they can swim but are virtually unable to walk. They have long, coarse fur that is light brown in color, but often appears green due to the blue-green algae that grow there. Instead of toes, their front and hind feet have three curved claws that allow them to easily hook onto tree branches and hang upside-down. Sloths move too slowly to hunt. They are herbivorous, which means they eat only plants. Their low-energy diet consists of leaves, twigs and fruit. Because of their slow movement and metabolism, it can take up to a month for a sloth to digest a single meal.

Do birds migrate to rainforests?

Many birds that spend the summer in North American back yards migrate to tropical rainforests in the winter. The Baltimore oriole travels from the eastern coast of the United States, more than 3,000 miles to winter in the warm forests of Central and South America, where they often find refuge in shade-grown coffee farms. Not only do the trees on these farms provide habitat for the birds, they protect the coffee crop from the harsh rays of the sun. The birds do their part by eating insects that attack the coffee plants

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