Category Archives: HOW?

130.HOW MIGRATING BIRDS FIND THEIR WAY?

In the late summer, many birds in various parts of the world leave their homes and fly south for the winter. Sometimes they travel to other continents, thousands of miles away. Next spring, these birds return not only to the same country, but often to the very same nest in the same building! How do they find their way?

Various interesting experiments have been made to try to find the answer. In one of these, a group of storks was taken from their nests before the time of the autumn migration and moved to another place. From this new location, they would have to travel in a new direction to reach their winter feeding grounds. But when the time came, they took off in exactly the same direction they would have followed from their old home! It seems as if they have an inborn instinct that tells them to fly off in a certain direction when winter approaches. The ability of birds to find their way home is equally amazing.

129.HOW DO BIRDS KNOW WHEN TO MIGRATE?

The migration of birds has fascinated man since the very beginning of history. Did you know that Homer wrote about it in 1000 B.C.; it’s mentioned in the Bible; and the great Greek philosopher, Aristotle, studied the question?

And yet, so many thousands of years later, we still don’t have the complete answers to the fascinating phenomenon of the migration of birds. By this migration, we mean the movement of birds south in the fall and north in the spring, or moving from lowlands to highlands, or from the interior to the seacoasts.

111.HOW LONG HAVE CATS BEEN PETS?

When most people say “Cat,” they are thinking of the small, domestic cat. But the cat family is really quite an amazing one, and includes leopards, lions, tigers, and jaguars!

All cats, large or small, have the same general proportions of body, and the same food habits. All cats are meat eaters and kill their own food. Depending on the size of the cat, this food ranges from small mice and birds up to large zebras, deer, antelope, and cattle.