"And then you can tell us another bookful about water and fish, and crabs and sky," said Dodo. "So we shall have a bird book, and a b.u.t.terfly book, and Olive's flower book!"

"Yes, and a beast book, too!" said Nat, "about c.o.o.ns and bears, and squirrels and foxes, you know! Rap has seen foxes right on our Farm!"

"I wish I knew something about the stars--and the rocks too," said Rap very earnestly. "Was this earth ever young, Doctor?"

"Yes, my boy, everything that Heart of Nature guides had a beginning and was once young."

"What is that? An Eagle?" cried Dodo suddenly, pointing up to a very large bird, with a white breast and brown-barred tail, who flew over the bay and dived into the water.

[Ill.u.s.tration: Osprey.]

"It's the Fisherman Bird," said Olaf. "Some call it the Fish Hawk and others the Osprey. They say it lives all over North America, but it goes far south in winter, and when it conies back in spring we know the fish are running again; for it lives on the fish it catches, and won't come until they are plenty."

"How does it catch fish?" asked Dodo.

"It hovers overhead until it sees, with its sharp eye, a fish ripple the water; then it pounces down like a flash, and grabs the fish with, its long claws, that are made like grappling-irons. If the fish is small the Osprey carries it home easily; but if it is a big one there may be a fight. Sometimes, if the Osprey's claws get caught in a fish too large to fly away with, the Fisherman Bird is dragged under water and drowned."

"Do they still nest on Round Island?" asked the Doctor. "There were a dozen pairs of them there when I was a boy."

"Yes, sir! But there is only one pair now. It's a great rack of sticks, half as big as a haystack; for they mend it every season, and so it keeps growing until now it is almost ready to fall out of the old tree that holds it. And, do you know, sir, that Purple Grackles have stuck their own nests into the sides of it, until it is as full of birds as a great summer hotel is of people."

"Oh, we must see it!" said Olive, who had finished putting her seaweeds to press; "for as yet I have only read about such a nest."

"What does the Osprey look like near to?" asked Rap.

"Like a large Hawk," answered the Doctor. "You would know him to be a Hawk by his hooked beak and claws. He walks in the procession of bird families along with the cannibal birds among whom he belongs, and who come after the Birds that only Croak and Call. But he is not a real cannibal, because he lives on fish, and never eats birds. So I will give you a description of him now."

The Osprey

Length about two feet.

Upper parts dark brown with some white on the head and neck.

Under parts white with some dark spots.

Feet very large and scaly, with long sharp claws, to hold the slippery fishes he catches.

A Citizen of North America.

A very industrious fisherman who minds his own business and does n.o.body any harm.

CHAPTER XX

SOME SKY SWEEPERS

About four o'clock, after a long rest, the party started for home, because they wanted to have plenty of time to stop in the wood lane on the way.

The first bird that Nat spied after they left the meadows was perching on the topmost wire of a fence by the roadside. Every once in a while he darted into the air, snapped up an insect, and returned to the same perch on the wire whence he had started. He was a very smart-looking bird, with a flaming crest that he raised and lowered to suit himself; and every time he flew into the air he cried "Kyrie--kyrie!"

"That is a Kingbird," said the Doctor; "it is very kind of him to show himself, for he is the bird I most wished to see. We have finished with the true song birds now, and the next order is that of the Songless Perching Birds--birds that have call-notes, some of them quite musical, but no true song. So we will name them the Birds that only Croak and Call.

"The crowing of a Rooster, the screech of a Night Owl, the Hawk's harsh scream, the laughing and hammering of a Woodp.e.c.k.e.r, all answer the same good purpose as a song.

"The first family of Songless Perching Birds is that of the Tyrant Flycatchers, and the first of these birds with which we have to do is the one you have just seen. He belongs to the guild of Sky Sweepers.

"But do not try to write anything down while we are driving over this rough road; the surrey jolts too much. You need only listen now, and Olive will help you with your note-books to-morrow."

THE KINGBIRD

"How the winged insects must hate a Kingbird, who is a real tyrant over them, and must seem very cruel!" continued the Doctor. "He sits on a rail or wire, and suddenly--flip, snap! a fly is caught--flip, snap! a wasp dies. All day long he is waging war, and helping us in our never-ending battle with the bugs.

"If he happens to fancy a rose-bug or juicy ant, he dashes to the leaf or gra.s.s-blade on which the insect is crawling, hovers a moment in the air to take aim, and then s.n.a.t.c.hes the bug off. So clever is he that when he eats bees, as he sometimes does, he seldom takes the honey-makers, but mainly the drones; perhaps he is afraid of being stung."

"What is a drone, Uncle Roy?" asked Dodo.

"A bee which does not work for its living and cannot sting."

"The Kingbird is proud of his nest, which he often confides to a maple on the edge of a garden, or to your pet pear tree. But let Hawks and Crows beware even of thinking about a Kingbird's nest! For he loves his home, and hates those who would injure it; and what is more, he is not one bit afraid of them. If they come in sight he attacks them bravely, and drives them far away, even if they are so big and fierce that he has to call his friends to help him; so that the robber Crow or cannibal bird is lucky if he does not lose an eye before he escapes.

[Ill.u.s.tration: Kingbird.]

"But the Kingbird is not quarrelsome--simply very lively; he is the very picture of dash and daring in defending his home, and when he is teaching his youngsters how to fly.

"Like other insect-eaters, he leaves the northerly States before cold weather and journeys beyond the United States for the winter. We always miss him when he has swooped along the fence rail for the last time and joined his brethren in the tree-tops, where the flocks form for their long flight."

The Kingbird

Length eight inches--about the size of a Wood Thrush.

Upper parts slate-colored, with black head, wings, and tail; a white band at the end of the tail, and a flaming orange spot on the crown.

Under parts pure white, a little grayish on the breast.

A Summer Citizen of the United States and Canada, travelling to Central and South America for the winter.

One of the best neighbors, and a brave soldier. An officer of the guild of Sky Sweepers, also a Ground Gleaner and Tree Trapper, killing robber-flies, ants, beetles, and rose-bugs. A good friend to horses and cattle, because he kills the terrible gadflies. Eats a little fruit, but chiefly wild varieties, and only now and then a bee.

THE PHOEBE

(THE WATER PEWEE)

"Smaller, but not a whit less active than the Kingbird is the Phoebe or Water Pewee--the small Flycatcher who is almost as familiar about the farm and roadside as the Robin himself. Look about the woodshed or cow-shed. Is there a beam or little nook of any sort that will hold a nest? If so, in early May you will see a pair of nervous brown birds, heaping up a mound of moss and mud. When they have made it large enough to suit them, they line it with soft gra.s.s and horsehairs; the nest is then ready for the white eggs, which once in a while are varied with a few brown spots.