Riverby. John Burroughs

and the one he needs to be most on the lookout for, is the cow. Backwoods cows and young cattle seem always to be famished for salt, and they will fairly lick the fisherman's clothes off his back, and his tent and equipage out of existence, if you give them a chance. On one occasion some wood-ranging heifers and steers that had been hovering around our camp for some days made a raid upon it when we were absent. The tent was shut and everything snugged up, but they ran their long tongues under the tent, and, tasting something savory, hooked out John Stuart Mill's "Essays on Religion," which one of us had brought along, thinking to read in the woods. They mouthed the volume around a good deal, but its logic was too tough for them, and they contented themselves with devouring the paper in which it was wrapped. If the cattle had not been surprised at just that point, it is probable the tent would have gone down before their eager curiosity and thirst for salt.

      The raid which Larkins's dog made upon our camp was amusing rather than annoying. He was a very friendly and intelligent shepherd dog, probably a collie. Hardly had we sat down to our first lunch in camp before he called on us. But as he was disposed to be too friendly, and to claim too large a share of the lunch, we rather gave him the cold shoulder. He did not come again; but a few evenings afterward, as we sauntered over to the house on some trifling errand, the dog suddenly conceived a bright little project. He seemed to say to himself, on seeing us, "There come both of them now, just as I have been hoping they would; now, while they are away, I will run quickly over and know what they have got that a dog can eat." My companion saw the dog get up on our arrival, and go quickly in the direction of our camp, and he said something in the cur's manner suggested to him the object of his hurried departure. He called my attention to the fact, and we hastened back. On cautiously nearing camp, the dog was seen amid the pails in the shallow water of the creek investigating them. He had uncovered the butter, and was about to taste it, when we shouted, and he made quick steps for home, with a very "kill-sheep" look. When we again met him at the house next day he could not look us in the face, but sneaked off, utterly crestfallen. This was a clear case of reasoning on the part of the dog, and afterward a clear case of a sense of guilt from wrong-doing. The dog will probably be a man before any other animal.

      III

      BIRDS' EGGS

      "Admire the bird's egg and leave it in its nest" is a wiser forbearance than "Love the wood-rose and leave it on its stalk." We will try to leave these eggs in the nest, and as far as possible show the bird and the nest with them.

      The first egg of spring is undoubtedly a hen's egg. The domestic fowls, not being compelled to shift for themselves, and having artificial shelter, are not so mindful of the weather and the seasons as the wild birds. But the hen of the woods and the hen of the prairie, namely, the ruffed and the pinnated grouse, do not usually nest till the season is so far advanced that danger from frost is past.

      The first wild egg, in New York and New England, is probably that of an owl, the great horned owl, it is said, laying as early as March. They probably shelter their eggs from the frost and the snow before incubation begins. The little screech owl waits till April, and seeks the deep snug cavity of an old tree; the heart of a decayed apple-tree suits him well. Begin your search by the middle of April, and before the month is past you will find the four white, round eggs resting upon a little dry grass or a few dry leaves in the bottom of a long cavity. Owls' eggs are inclined to be spherical. You would expect to see a big, round-headed, round-eyed creature come out of such an egg.

      The passenger pigeon nests before danger from frost is passed; but as it lays but two eggs, probably in two successive days, the risks from this source are not great, though occasionally a heavy April snow-storm breaks them up.

      Which is the earliest song-bird's egg? One cannot be quite so certain here, as he can as to which the first wild flower is, for instance; but I would take my chances on finding that of the phœbe-bird first, and finding it before the close of April, unless the season is very backward. The present season (1883) a pair built their nest under the eaves of my house, and deposited their eggs, the last days of the month. Some English sparrows that had been hanging around, and doubtless watching the phœbes, threw the eggs out and took possession of the nest. How shrewd and quick to take the hint these little feathered John Bulls are! With a handful of rattling pebble-stones I told this couple very plainly that they were not welcome visitors to my premises. They fled precipitately. The next morning they appeared again, but were much shyer. Another discharge of pebbles, and they were off as if bound for the protection of the British flag, and did not return. I notice wherever I go that these birds have got a suspicion in their heads that public opinion has changed with regard to them, and that they are no longer wanted.

      The eggs of the phœbe-bird are snow-white, and when, in threading the gorge of some mountain trout brook, or prowling about some high, overhanging ledge, one's eye falls upon this mossy structure planted with such matchless art upon a little shelf of the rocks, with its complement of five or six pearl-like eggs, he is ready to declare it the most pleasing nest in all the range of our bird architecture. It was such a happy thought for the bird to build there, just out of the reach of all four-footed beasts of prey, sheltered from the storms and winds, and, by the use of moss and lichens, blending its nest so perfectly with its surroundings that only the most alert eye can detect it. An egg upon a rock, and thriving there, – the frailest linked to the strongest, as if the geology of the granite mountain had been bent into the service of the bird. I doubt if crows, or jays, or owls ever rob these nests. Phœbe has outwitted them. They never heard of the bird that builded its house upon a rock. "Strong is thy dwelling-place, and thou puttest thy nest in a rock."

      The song sparrow sometimes nests in April, but not commonly in our latitude. Emerson says, in "May-Day: " —

      "The sparrow meek, prophetic-eyed,

      Her nest beside the snow-drift weaves,

      Secure the osier yet will hide

      Her callow brood in mantling leaves."

      But the sparrow usually prefers to wait till the snow-drift is gone. I have never found the nest of one till long after the last drift had disappeared from the fields, though a late writer upon New England birds says the sparrow sometimes lays in April, when snow is yet upon the ground.

      The sparrow is not a beautiful bird except in our affections and associations, and its eggs are not beautiful as eggs go, – four or five little freckled spheres, that, like the bird itself, blend well with the ground upon which they are placed.

      The eggs of the "chippie," or social sparrow, are probably the most beautiful of sparrow eggs, being of a bright bluish green with a ring of dark purple spots around the larger end.

      Generally there is but little relation between the color of the bird and the color of its egg. For the most part, the eggs of birds that occupy open, exposed nests are of some tint that harmonizes well with the surroundings. With the addition of specks of various hue, they are rendered still less conspicuous. The eggs of the scarlet tanager are greenish blue, with faint brown or purplish markings. The blackbird lays a greenish blue egg also, with various markings. Indeed, the favorite ground tint of the birds that build open nests is a greenish blue; sometimes the blue predominates, sometimes the green; while the eggs of birds that build concealed nests, or lay in dark cavities, are generally white, as is the case with the eggs of all our woodpeckers, for instance. The eggs of the bluebird are bluish white.

      Among the flycatchers, the nest of the phœbe is most concealed, at least from above, and her eggs are white, while those of nearly all the other species are more or less tinted and marked. The eggs of the hummingbird are white, but the diminutiveness of their receptacle is a sufficient concealment. Another white egg is that of the kingfisher, deposited upon fish-bones at the end of a hole in the bank eight or nine feet long. The bank swallow also lays white eggs, as does the chimney swallow, the white-bellied swallow, and the purple martin. The eggs of the barn swallow and cliff swallow are more or less speckled. In England the kingfisher (smaller and much more brilliantly colored than ours), woodpeckers, the bank swallow, the swift, the wryneck (related to the woodpecker), and the dipper also lay white eggs.

      A marked exception to the above rule is furnished by the eggs of the Baltimore oriole, perhaps the most fantastically marked of all our birds' eggs. One would hardly expect a plainly marked