It does not seem very polite to call a family of birds wagtails, just because they have the habit of jerking their tails as they go about. But that is the name they go by in the books, and we have two of them in the United States. We call them pipits or titlarks.

The best known is Sprague's Pipit, called the Missouri skylark, or sometimes the prairie skylark. This bird gets the name of skylark because he sings while soaring about in the air far over our heads. He could not sing on a tree if he wanted to, for he lives on the plains between the Mississippi River and the Rocky Mountains, where are few or no trees.

The pipits live on the ground, and walk and run, not hop. As they go, they bob their heads, and jerk their tails. They are a little larger than an English sparrow, and they go in flocks. They are never seen in the woods, but in open pastures or plains, or beside a road.

Sprague's Pipit is all in streaks of brown and gray, and lighter below. He has a large foot, which shows that he lives on the ground, and a very long claw on the hind toe.

The nest of the pipit is made by hollowing out a little place in the ground and lining it with fine grasses. Though on the ground, it is one of the hardest to find, because it is lightly covered with the dry grasses, and when the bird is sitting, she matches the grasses so well that one can hardly see her, even when looking right at her.

The birds eat insects and weed seeds, and go about in flocks. Even then they are hard to see, because when they are startled they do not flutter or fly, but crouch or squat at once, and stay perfectly still.

This bird is noted, as I said, for his song. It is said to be as fine as that of the English skylark of which we hear so much. Perhaps his way of singing makes it still more interesting. He starts up on wing, flies a little one way, then the other, all the time going higher and higher. So he climbs on up, up, up, in a zigzag way, till he is fairly out of sight, all the time giving a wonderfully sweet song. It is not very loud, but of such a kind that it is heard when the bird is far out of sight. When he can no longer be seen, one may still follow him with a good field-glass. He will sing without stopping for fifteen or twenty minutes.

Then suddenly he stops, closes his wings, and comes head first towards the ground. It seems as if he would dash his brains out against the earth, but just before he touches, he opens his wings and alights like a feather, almost where he started from. He should be as famous as the English bird, and will be, no doubt, when he is better known.

One of the things which make bird-study so interesting to us is that there is so much to be found out about our birds. European birds have been studied much longer, but we have still many beautiful ones whose manners and ways of living are almost unknown. These things are left for you young folk to find out when you are grown up.