Premieres April 22, 2015 at 8/7c on PBS. Check your local listings.
A spider found in the Caribbean and South America build nests more than 20 feet across.
A female Anna's hummingbird builds a nest constructed of plant fibers and spiderwebs.
Merganser ducklings brave the 50-foot drop from their nest to the forest floor
See how a key scene in NATURE's "Animal Homes" was filmed.
Baby orangutans sometimes need a little help when swinging from tree to tree.
Just how quiet is a barn owl in flight? The answer, as it turns out: very quiet indeed.
Juvenile penguins, sporting feather mohawks, band together to take on their worst enemy.
A female European badger finds a home to rear pups--and a mate to father them.
Crossing the road can be dangerous for the sloths. Fortunately, there are people to help.
Killer whales pin down an entire pod of narwhal in shallow water.
Polar bears are forced to try their luck hunting salmon as arctic ice sheets dissappear.
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