Look first at this pretty clump of grass, with a bramble trailing over it and a bunch of primroses growing near. You would hardly have found the nest, so well hidden, unless you had known it must be there. It is a robin's, and the mother is bringing a caterpillar for her little family. Which of the three gaping yellow mouths will get the delicious morsel? Quite near is a wren's nest in some ivy, and so neatly is the nest made of moss woven together that there is only one tiny little hole left for the heads of the little wrens to peep out. The perky little father, with his tail cocked up, stands near. He is very shy and jealous, and so is his mate; if you put just the tip of your finger on the edge of a wren's nest the birds would desert at once, leaving the wretched young ones to starve. The little brown bird in the next case is the nightingale, who sings so sweetly; he is not much to look at, yet he has a picturesque home, with meadow-sweet and wild roses growing over it.

It is odd how many birds build on or near the ground, which you would think was dangerous. The robin is particularly fond of this; it chooses an overhanging bank if it can find one, and though the nest is well hidden, there is nearly always a cat prowling near to seize the young ones just when their first feathers are growing, so it seems wonderful that robins ever escape at all. On the left side is the wood-wren, with a nest just like a handful of hay flung down among some dead leaves. Near here, too, are the house-martins, and further on the swallows and other birds, who build under the projecting eaves of houses; of all the nests, these look the most safe and cosy. The house-martin is a really clever builder; he takes little mouthfuls of clay in his beak and sticks them one by one under the deep overhanging tiles or slates of a house or barn, and gradually forms a complete nest like a ball of clay, which dries hard, and is stuck against the wall, with only one opening like a lip at the top. The nest does not look comfortable, but it is, for inside it is lined with the softest white feathers, whereon are laid the pearly-white eggs. The sand-martin, the house-martin's cousin, prefers the side of a cliff. He digs into a cliff or sandbank a long tunnel quite as long as your arm, and just big enough for him to pop in and out with comfort. At the very far end of this in the warm darkness he puts bits of straw and feathers to make a bed, and here the young are hatched. Until they grow older they never go down that long mysterious tunnel where mother and father run in and out, but only see in the distance the white gleam of a round hole. What a wonderful world it must seem to the young bird when he first steps out! He is very timid, and as he gets near the opening he hears the beating of the waves on the shore perhaps, and then the great wide ocean opens before him and the illimitable sky. What a big world! He must turn almost giddy with fright and amazement.

Some birds choose furze-bushes to build in, which must be prickly and uncomfortable, but are thick. Here there is a woodpecker family. The woodpecker is a fairly big bird, and he has a beautiful crimson streak on his head; with his strong bill he carves out a deep hole in a tree, right into the trunk—it is wonderful that the bird should have the strength and patience to cut into the solid wood—and when he has made a deep hole, he begins to make it bend down, and in the dip he makes his nest. The young woodpeckers are therefore shut in very tightly and safely. The parent birds run up and down the trees seeking for insects, on which they live. To see them run straight up a tree as a cat would do is very curious; but they are shy birds, and not often seen.

Other birds, like the reed-warbler, build in reeds; this seems a very safe plan. Here you see several tall green reeds growing out of the water, and about a foot above the water the bird has made a clever nest, twisting bits of roots and grass together, and lacing them in with the reeds, which are strong enough to hold such a dainty thing. So the little nest swings and sways with the wind over the water, and the reed-warbler is safe from cats, at all events; but one imagines the young birds must sometimes tumble out and get drowned before they can fly.

A very odd bird is quite near this, and that is the butcher bird. He really is a butcher—that is to say, he kills tiny animals and even other little birds, and keeps them in a larder for use. For this purpose he chooses a bush with thorns, perhaps a hawthorn, and then when he catches any small creature he sticks it on the thorns and leaves it there spiked until it is wanted. Look at this one's larder. He has a wretched little dead sparrow hanging by its neck from a big thorn, and two or three bumble-bees spiked too. We can imagine the mamma saying to the little ones: 'No, dears, you mustn't have any sparrow to-night just before you go to bed; it would give you indigestion and make you dream. Papa will have some of that for his supper, but if you'll be good children I'll give you each a bit of bumble-bee.' The mother bird is talking to a young one who has got out of its nest. They are fat, strong little birds, as they should be with such food.

After this we come to bigger birds—ducks and puffins. Puffins have beaks like poll parrots, and are about the size of a rook; they have neat white shirt-fronts, and their beaks are red and yellow and blue, but they have silly faces, as if they thought of nothing but their own fine clothes. They live near water on cliffs, and sometimes use an old rabbit burrow for a nest, in which they lay one pure white egg, and one only. When the young one is hatched the parent birds feed it on tiny fish and minnows. You can see here the puffin bringing up a minnow in his beak for supper.

Beyond are great grey and white gulls, with their keen beaks and strong legs. They are pirates, the gulls, and will eat other birds' eggs if they can get them; they are wild and fierce. Another sea-bird, very different in appearance, is the little stormy petrel. Very small and graceful; he is a thin little bird, with a dark-brown coat, but at heart as wild as the proud gulls. He is never happy except when dancing over the cold grey waves and feeling the dash of the spray. The petrel is at sea all day, and scorns the quiet land and delights of home. The howl of the storm, the clash of the water is music to it, and it would pine and die in a cage on land. When it wants to lay an egg, it makes a nest not far from its beloved sea, and lays there one egg; but even when the young one is hatched the mother cannot give up her wandering life. She is a wanderer by nature, and she only comes back at nights to see that the little one has food; then away to the wild tossing grey water again.

The next set of birds are the owls, and very wicked and ferocious some of them look. There is the long-eared owl, with his bent-in, short, hooked nose and funny feathered ears standing straight up. The little owls are balls of soft fluff, and are eagerly looking at the dead mouse that father owl has brought for them to eat. They have a very rough nest, merely a platform of pine-twigs thrown together in the fork of a fir-tree; but they are hardy little birds, and do not mind that at all. Close by is a monster owl, called the great eagle owl. He has bright yellow eyes, with very large pupils as black as jet; his tail is spread like a turkey-cock's, and altogether he looks very terrifying. You would not like to meet him alone if you had made him angry, for he is as large as a fair-sized dog, and his ugly claws and savage beak would make short work of your soft face and bright eyes. Luckily, you are not likely to meet him, for he doesn't live in England.

It is worth while to cross over here to the other side of the gallery and see the great bustard, with his wonderful curving white feathers. He is about the size of a small turkey, whose cousin he is, and his plumes are like those on a field-marshal's helmet. Near here are two curious sorts of nests—one the Norfolk plover, or, as he is called, thick-knee; the eggs are just laid on the sand, and are so much the same colours as the speckled stones around that you have to look hard to find them, and at a little distance they seem to vanish altogether. The funny little wee birds, too, are just like rough sand, and have two black lines down their backs; crouching down without moving, they would be well hidden. The common tern lays its eggs amongst rough stones, where you would think that anything so fragile as an egg would easily get broken. Near his case there is a beautiful pure white gull, who lives in the Arctic regions among the ice and snow. It is a wonderful law of Nature that birds and animals often resemble their surroundings. We have seen that the tiger is not easily seen among his bamboo-stems, and that birds the colour of sand live on sand; well in the Arctic regions, where there is perpetual ice and snow, nearly all the creatures are pure white, from the great Polar bear down to the rabbits and gulls. This is explained by the fact that if an animal is not white he shows up against the ground, and then his enemies, other animals waiting to prey upon him, see him, and catch him and eat him; so the white ones escape, and as children take after their parents they are white, too. And if one of the children happens to be darker he is quickly eaten, and his whiter brothers and sisters escape. This white gull has made a nest that looks like nothing but a muff of moss lying on very rough and sharp stones; there is not much reason why the little ones should want to climb out, at all events, while their feet are tender. Some enormous eagles attract attention: one with strong beak and claws. A condor near is one of the largest birds in the world. His native place is in South America, and at first when travellers brought accounts of this gigantic bird they were not believed; but at last someone managed to shoot one and brought it to England, so then he had to be believed. The one here in the Museum has spread his wings, and the length from end to end is larger than the tallest man. The hideous vultures near have scraggy necks, with a ruff round them. The vultures never kill animals for their own food, but live on the refuse that is left by other animals or men. The eagle is like the lion among the animals, and the vulture is like the jackal, who runs about picking up all the nasty bits no one else will have. In the cases beyond there are graceful swans and chubby ducks and flamingoes, birds whose long pink legs make them look as if they stood on painted stilts, and who have beautiful rose-coloured edges to their white wings. At the very end of the gallery there are two huge cases as big as the side of an ordinary room, and it is well to sit down here and look at them, for both are full of interest. In part of one the space is taken up with a great cliff, in which is the home of the golden eagle, wildest and most untameable of all eagles. He lives far up on lonely mountain heights, where the air is cold and pure. His great wings sail over vast dark chasms, where men have sometimes lost their lives. His eye sees an extraordinary distance, and his flight is very swift. He chooses for his home a cave or natural hole on the face of a high cliff; this is called the eyrie, and here he gathers together sticks, and odds and ends to make a kind of bedding for his young. When the little eaglets are young they are just like balls of white cotton-wool, with streaks of black here and there, all fluff and down, like those you see here. The mother and father birds go sailing high up in the sky, and suddenly they descend with a swift dive and pounce on some tiny lamb who has strayed from his mother's side, and perhaps fallen over the edge of a cliff and cannot get back again. He has been bleating loudly to call his mother to him, for he is too little to know he may attract enemies as well as friends; and his cries have been heard by the eagle, who comes down like an avalanche, and, seizing him firmly in its great talons, carries him away higher and higher to the nest in the cliff. Then there is a whirr and swoop, and the mother or father eagle, whichever it is, alights on the rough platform in the cliff and lays the still warm and only half-dead woolly lamb before the young ones. There is not much chance for it then, but let us hope it has been stunned and made unconscious long before this by its swift whirling voyage through the air. Eagles catch rabbits, too, and anything they can find. In one nest there were found the remains of nine grouse, four hares, part of a lamb, and many other things. Here in the eagles' nest in the gallery you can see a half-eaten rabbit's leg hanging out over the edge, and other nasty remains.