Salmon are probably best known for their habit of living in the ocean and then returning to the exact stream in which they were hatched to spawn

Salmon have an unusual life style

A bird's bill is a kind of tool

North America has a rich variety of birds.  More than 800 different species live and nest north of Mexico.

Spiders are both scary and important

Next to snakes, spiders are probably the most feared group of animals in the world.  Although unwarranted, fear of spiders is widespread.

Flowers are not just for pretty

Although it may seem as though flowers grow for our enjoyment, they're really a crucial part of a plant's survival and not just for "pretty".

How birds survive winter weather

The arrival of winter in the north brings particular survival demands on the animals living in these areas.