Home / Albums / Natural History 1613
- The Musk-Ox (Ovibos moschatus)
Another large mammal, perhaps less well known, is the Musk-Ox (Ovibos moschatus), which resembles in size the smaller varieties of Oxen, but in structure and habits is closely allied to the Sheep. As is implied by the specific name, it exhales a musky odour; this does not, however, appear to be due to the secretion of a special gland, as is the case in other animals with a similar smell. The skin is covered with long brown thickly-matted hair, interspersed with white. It is confined to the most northerly parts of North America and the American Arctic islands, and to North Greenland. Though not now living in the Old World, it seems formerly to have been abundant in Siberia, and, as we shall learn later on, it was one of the species which took part in the great Siberian invasion of Europe. Its remains have been found not only in Germany and France, but also in the south of England. - Mosquito
Anopheles crucians. Female - Foot of Epeira Vulgaris
The legs are used chiefly for running, jumping, and climbing; but the front pair serve often as feelers, being held up before the body while the spider walks steadily enough on the other six. One or both of the hinder legs are used to guide the thread in spinning; the spider at the same time walking or climbing about with the other six or seven. The legs are seven-jointed; and on the terminal joint are three claws ( A, B, C) and various hair and spines. - Horned Viper
Horned Viper - Saccopharynx ampullaceus
- Pine Siskin
Pine Siskin Pine Siskins are unpredictable. Some years they are numerous, while others produce few, if any, in the same area. Food supply is not necessarily the answer, for they are erratic wanderers. These small finches seem to prefer conifers for nesting. They build a neat structure, using grass, bark or moss with a lining of finer materials. Their home is well hidden by the heavy foliage near the end of a limb. The eggs are a pale bluish-green, dotted with brown or black markings, more colorful than the pale blue eggs of the American Goldfinch. Siskins resemble goldfinches in their notes, flocking habits and size, but can be identified by the uniform, striped appearance. They have semi-concealed yellow patches near the body on both wings and tail. Goldfinches show clear breasts in any plumage. Birders have found the best clue to the identity of this bird is the long buzzy note which forms a part of his song. His notes are husky in quality. - Gems
Gems - Bat
Bat - Eastern Kingbird
Eastern Kingbird The Eastern Kingbird, altho slightly smaller than a Robin, is “monarch of all he surveys,” and is ready and willing to defend his territory against all comers. His happiest moments seem to be spent in chasing hawks, crows, herons or vultures and he is the first to see their approach and give the alarm. Then, like a fighter-plane, he speeds high in the air and dives on the intruder. Such aerial attacks are of short duration for the larger bird soon escapes to a safer location. He then drops back to his favorite perch, often using such quick wing-beats that he seems to be tip-toeing thru the air. This flycatcher with his white breast, dark head, back and wings, and black tail with white terminal band, is identified easily. He likes to nest around farm homes or other open country but wants a few open spots where he can perch while waiting for passing insects. People who raise bees often refer to him as a “bee-martin,” and accuse him of eating honeybees. There is little ground for this accusation for only 22 stomachs of 634 examined showed a total of 61 bees eaten and 51 of the total were drones. On the other hand, this bird eats robber flies which catch and destroy bees. Eighty-five per cent of his food consists of insects which includes grasshoppers, crickets and cutworms. - Crested Flycatcher
Myiarchus crinitus Flycatchers can be, and often are, noisy birds. They seem to enjoy life and want the world to know how they feel about it. The Crested Flycatcher is no exception. To hear this bird at his best, stroll quietly thru some heavily-wooded area. You scarcely are aware of the flute-like tones of the Wood Thrush in the distance, drum of the Downy Woodpecker, the bubbling tones of the Carolina Wren. All is serene. Suddenly a loudly-whistled “wheeep,” followed by a series of equally loud rolling notes, shatters the air. That is the Crested Flycatcher. You might see him sitting quietly, peering intently at every leaf and branch, slowly moving his head so nothing will be missed. Then you will see the rufous tail, yellow belly, olive head and back, grayish throat and 2 wing bars. You might see the slight crest from which he gets his name. He is a trim bird almost robin size. - Balanoglossus clavigerus . (Young specimen, greatly enlarged)
In the adult state, this animal reaches a length of 20 cM. It is said to emit light by phosphorescence. The species depicted lives in the Mediterranean Sea at 1 or 2 fathoms. The ovoid anterior section of the elongated, cylindrical, slimy body, the glans , is separated from the subsequent collar by a deep constriction, in which the mouth opening is located. The glans, whose large internal cavity can be filled and emptied with water through two openings, changes its shape and size; it serves, except as a suture when crawling, as a drill when digging passages in the sea bed, in which the body is usually hidden up to the mouth. The alimentary canal, in which, in addition to food, water is also absorbed, is in communion with two longitudinal series of gill pouches , which are located in the anterior or gill part of the trunk on the back. The water, which has been used for breathing, flows out through a series of about 20 fine slits on the ventral side. The widest part of the alimentary canal is in the stomach part of the trunk; it is always filled with sand, the organic components of which serve the animal as food. The tail is grooved annularly; through the terminal vent opening, the sand is ejected, which forms piles next to the opening of the corridor. - Chipmunk
- Wood Thrush
Wood Thrush To know the Wood Thrush is to love him. Unfortunately he seldom visits cities unless parks or other heavily-wooded areas are found within the borders. Forests, with a plentiful undercover, offer the seclusion which this bird demands. There you will hear the flute-like tones which make this bird famous as a singer. It is not a continued effort; each series of notes is followed by a rest, allowing you to absorb the full beauty of the rounded tones—then another, but completely different series, sometimes higher, sometimes lower, but always the same pure quality. Some think the Hermit Thrush is a better singer, but the Wood Thrush is a close competitor. - Yellow-breasted Chat
Yellow-breasted Chat The Yellow-breasted Chat is not only the largest, but the most unwarbler-like of this colorful family. If you live near thickets of dense shrubbery, where brier tangles and brushy, low bushes grow in profusion, there you will find this bird. He prefers low, damp ground but does not overlook similar habitat on dry hillsides. His loud and varied song will let you know when he arrives. Each series of notes is followed by a long pause, and then another series, but on an entirely different pitch; clear-whistled notes, low grating tones, caws or reed-like tones all find a place in this bird’s song. - Aëdes calopus; larva
The yellow fever mosquito breeds in cisterns, water barrels, pitchers and in the various water receptacles about the house. In our own Southern States it very commonly breeds in the above-ground cisterns which are in general use. Often the larvæ are found in flower vases, or even in the little cups of water which are placed under the legs of tables to prevent their being overrun by ants. They have been repeatedly found breeding in the holy water font in churches. In short, they breed in any collection of water in close proximity to the dwellings or gathering places of man. - Myrtle Warbler
Myrtle Warbler The Myrtle Warbler is a member of a colorful family of American birds most of which are smaller than sparrows, have thin pointed bills, are more active than vireos. They are often referred to as the butterflies of the bird world. The Myrtle Warbler is presented because he is the first to arrive in spring, often before the leaves arrive to hide him from view. This 5½-inch bird has 4 yellow marks which will identify him: the crown, rump and each side of the breast. He appears darker than most warblers, being blue-gray above, white below with black marks across the breast and back beneath the wings. The white throat and 2 white wing bars offer contrast. Females and young lack the brilliant markings of the male, but the yellow rump patch will identify the birds. The white throat distinguishes this from other warblers which show a yellow rump. This bird is a migrant since he prefers to nest in the evergreens of Northern United States and Canada. He feeds on insects and larvae which infest our trees but captures many flying insects when available. Often he winters farther north than you would expect to find warblers and then feeds on small berries. Myrtle or bayberries are a favorite food and the name of the bird indicates its fondness for these berries. - A grateful return
A favourite house-dog, left to the care of its master’s servants, while he was himself away, would have been starved by them if it had not had recourse to the kitchen of a friend of its master’s, which in better days it had occasionally visited. On the return of the master it enjoyed plenty at home, and stood in no further need of the liberality it experienced; but still it did not forget that hospitable kitchen where it had found a resource in adversity. A few days after, the dog fell in with a duck, which, as he found in no private pond, he probably concluded to be no private property. He snatched up the duck in his teeth, carried it to the kitchen where he had been so hospitably fed, laid it at the cook’s feet, with many polite movements of the tail, and then scampered off with much seeming complacency at having given this testimony of his grateful sense of favours. - Normal position of the larvæ of Culex and Anopheles in the water
(a) Normal position of the larvæ of Culex and Anopheles in the water. Culex, left; Anopheles, middle; Culex pupa, right hand figure - Wandering Crab Spider
Wandering Crab Spider ( Thomisus viaticus ): in the background a specimen, which ejects a thread and another, which is suspended by the wind while hanging on a thread; in the foreground a male, b a female and c the eye-bearing part of the head-breast seen from behind. - Kingsnake
Kingsnake - Bronzed Grackle
Bronzed Grackle Almost everyone who lives or has traveled any place east of the Rocky Mountains has seen this bird. The chances are they call it a blackbird, for most people do. From his appearance, they are right. Since there are a number of different species of blackbirds, this one should be examined more closely. When you see him walking around your yard, you will notice he is larger than a Robin, has a wedge-shaped tail and yellow eyes. The male often shows a keel-shaped tail, when flying. The plumage is iridescent and may show green, blue or purple. Those who live along the Atlantic coast refer to these birds as Purple Grackles, a name which is becoming popular for both the eastern and western types. Grackles gather in huge flocks and can do much damage to unharvested crops. In mixed flocks, grackles show a more even flight pattern than most blackbirds. - The common round-web spider, Epeira vulgaris of Hentz (Under Side)
The body is seen to be divided into two parts, connected only by the narrow joint, A, just behind the last pair of legs. The front half of the body, called the thorax, contains the stomach, the central part of the nervous system, and the large muscles which work the legs and jaws. The hinder half, the abdomen, contains the intestine, the breathing-organs, the principal circulating-vessels, the organs of reproduction, and the spinning-organs. Connected with the thorax are six pairs of limbs, four pairs of legs, B B B B, a pair of palpi, C, and a pair of mandibles, D. - Larva of Forficula
Larva of Forficula - Short-horned Bull
- Sleeping Bat
- Waterbok (Antilope [Kobus] ellipsprymna, Ogilby)
- Teju
Teju - Cockroach
Periplaneta orientalis, male Dorsal view. 1 Antenna 2 palp of first maxilla 3 prothorax 4 anterior wings 5 femur of second leg 6 tibia 7 tarsus 8 cerci anales 9 styles (From Kükenthal.) - Loggerhead Shrike
Loggerhead Shrike A gray bird with a black mask over the eyes, black wings which show a white patch when flying, and a black tail with white margins, all help identify this shrike. His head seems large when compared to his trim body, he has a hooked beak, the under plumage is white. If there is any doubt, watch him fly from one perch to another. He drops down near the ground, flies rapidly and then zooms up to his next location. Another habit is flicking his tail like a Phoebe when he alights. This bird likes open fields, pastures, grassy or weedy grounds with handy perches where he can get a good view of his surroundings. He has good eyes and any small snake, mouse or grasshopper will cause him to investigate. He often hovers before striking and catches his prey with his strong beak, for his feet are not equipped with heavy claws like most predators. This also makes it necessary for him to impale his prey on thorns, barbed wire or some other pointed object where he can cut it with his sharp bill. Shrikes seem to prefer thorny trees for nesting, but will use whatever is available. Most nests are rather low and are bulky structures. These birds kill more food than they consume and would be held in better repute except for the habit of killing other birds. - Head of young male Bison
- Mus rattus
- Hand of Gorilla, Orang, Gibbon, and Chimpanzee
- Mosquito
Anopheles punctipennis. Female - Panther snake
Panther snake - Snapping turtle
Snapping turtle - Head of Manilla Buffalo—female
- Hypobythius calycodes
- Bobwhite
Colinus virginianus This chunky little brown quail is popular in every region where he resides. Hunters spend thousands of dollars each year in pursuit of this feathered bombshell. Farmers appreciate having such an active ally in their fight against the hordes of insects which menace their crops. They enjoy hearing his cheerful whistle as they go about their daily chores. Birders are happy to know this is one bird which offers no problem for they can list him by either sight or sound. Anyone can point with pride to this bird’s good character for the male can, and often does, take charge of the brood, teaching them how to exist in a hostile world. - Red-headed Woodpecker
Melanerpes erythrocephalus If all birds wore contrasting colors like the Red-headed Woodpecker, identifying birds would be easy. You just can’t miss on this one—the red head and neck, white under parts, blue-black back and tail, black wings with a broad white patch. The young show a grayish-brown head but the white wing patch gives you the clue. These beautiful birds once were common and nested from the Gulf of Mexico to the southern edge of some Canadian provinces. Recent years have shown a decline in their numbers, probably due to Starlings taking over their nesting cavities before the woodpeckers can rear their broods. Another factor is their destruction by speeding automobiles. These birds feed on flying insects, and often drop down on our highways in pursuit of grasshoppers. Motor cars and some drivers have no respect for wildlife, no matter how beautiful or beneficial. - Argus persicus. Capitulum of male
Until recently, the ticks attracted comparatively little attention from entomologists. Since their importance as carriers of disease has been established, interest in the group has been enormously stimulated and now they `rank` second only to the mosquitoes in the amount of detailed study that has been devoted to them. The ticks are the largest of the Acarina. They are characterized by the fact that the hypostome, or "tongue" is large and file-like, roughened by sharp teeth. - Anopheles quadrimaculatus mosquito
Anopheles quadrimaculatus mosquito, male and female - Northern Water-thrush
Northern Water-thrush It is easy to see why these warblers are called water-thrushes. They resemble thrushes and usually are found near water. When you see him walking down a half-submerged log or wading along the edges of a pool, you will find he teeters like a Spotted Sandpiper. You also will notice the dark, olive-brown back, yellowish stripe over the eye, the throat and under parts buffy-yellow streaked with dark olive. The slightly larger Louisiana Water-thrush shows a white line over the eye, white or buffy-white under parts, unmarked white throat with duller streaks under the body. The Ovenbird, a near relative, shows an eye ring, reddish-orange crown and lacks the line over the eye. Western observers will find that Grinnell’s Water-thrush is slightly larger with lighter eye lines and under parts. - Viper
Viper - Yellow-headed Blackbird
Yellow-headed Blackbird Eastern birders are unfortunate for only on rare occasions do they have a chance to see and study this handsome bird. He is larger than the Red-winged Blackbird, with which he often is associated, but smaller than the Grackles. During migration, they join other members of their family in feed lots, pastures or fields and any mixed flock is worth inspecting. They are identified easily for no other bird has the black body, white wing patch and yellow head and breast. The female lacks wing markings and shows dusky, grayish-brown coloring with a yellowish tinge on lighter head markings. They walk with almost a strut, as if they were proud of their brilliant plumage. Yellow-headed Blackbirds nest in colonies and affix their bulky nests to tules and other vegetation which grow in the center of marshes and swamps in western areas. There seems to be a tendency to move eastward, for a few are nesting in the marshes of the upper Mississippi valley. Their song is distinctive and consists of a series of chuckles, squeaks and grating notes, all produced by what seems to be a great physical effort. The results hardly justify such a strain. - Preparing to lie down
Preparing to lie down - Rattlesnake
Rattlesnake - Pleat Gecko
Pleat Gecko - Elaphurus Davidianus
Elaphurus Davidianus - Killdeer
Killdeer The killdeer is the common plover which we see in pastures, meadows, fields or on shores of ponds and lakes. Freshly mown alfalfa fields, short grass or stubble, even newly plowed fields attract them. They gather in loose flocks to feed on exposed insects or worms. Their usual pace consists of a short run, a quick stop to check for some juicy morsel, then another short run. All stops are accompanied by a jerky movement as if undecided whether to spring into the air or stay on the ground. Even the spindly legged young have this bobbing habit. This bird is only a little bigger than the Robin, but longer legs and tail make him appear larger. White collar with 2 black bands across the lower neck and upper breast, chestnut back and tail, white lines in the wings in flight, all make this plover easily identified. If there is any doubt you will soon hear his “kill-dee,” or “kill-deer” notes, for he is a noisy bird, quick to resent any intrusion in his territory. These calls alert other birds, much to the disgust of duck hunters who are trying to make a quiet approach to their blinds. - Eastern Phoebe
Eastern Phoebe Unlike many of the flycatchers, this bird which is only a little larger than the English Sparrow, is easily identified. His black bill, lack of wing bars or eye ring is distinctive but his habit of jerking or waving his tail is conclusive. The habit of repeating his name over and over in a low but emphatic tone gives little doubt of his presence. Some people might confuse this call with the high notes of the Black-capped Chickadee but when once learned there is little resemblance. The Phoebe is one of the hardiest of his clan, often wintering in the southern portion of its nesting range and returning in spring so early that we often wonder how he can find sufficient flying insects to sustain life. - Ruby-crowned Kinglet
Ruby-crowned Kinglet When you hear this bird sing, you are impressed by the beauty of clear, but variable notes. When you check the source, you are surprised to see a tiny bird with such a big voice. His short tail might lead you to believe he is even smaller than the 3¾ to 4½ inches which he measures. His coloring is not impressive, being an olive-gray. You might notice the distinct eye ring or the prominent wing bars. If he is excited by your close inspection, he might flash the ruby crown feathers, from which he gets his name. - Zebra with young
Zebra with young - Head of Gaur
- White-Eared Antelope (A. leucotes), Male, Central Africa
White-Eared Antelope - Early Life-History of the Salmon
1. The fertilised egg, shed in the gravelly bed of the river. 2. The embryo within the egg, just before hatching. The embryo has been constricted off from the yolk-laden portion of the egg. 3. The newly hatched salmon, or alevin, encumbered with its legacy of yolk (Y.S.). 4 and 5. The larval salmon, still being nourished from the yolk-sac (Y.S.), which is diminishing in size as the fish grows larger. 6. The salmon fry about six weeks old, with the yolk fully absorbed, so that the young fish has now to feed for itself. The fry become parr, which go to the sea as smolts, and return as grilse. In all cases the small figures to the right indicate the natural size. - Cedar Waxwing
Cedar Waxwing Waxwings are the nomads of the bird world; like gypsies, they come and go. Apparently they drift southward in the fall and northward in the spring, but have no regular migration. They range from Southern Canada to Central America but might leave when it frosts or stay thru the winter. Unlike some “Knights of the Road,” they present a neat appearance. In fact the soft, brownish-gray plumage, fading into lighter under parts, the slate-colored tail with the yellow tip, the jaunty crest, the black eye mask, the reddish spot on the wing, the sleek, streamlined stance—all mark him as an aristocrat. Waxwings like companions and travel in flocks. Where you find one, you might find a dozen or more than one hundred. Whether feeding or resting, you will hear them conversing in a high-pitched, wheezy note which is difficult to describe. Some refer to it as a hiss, others as a whine. - Grizzly Bear
- House Wren
House Wren Most Americans seem to have fallen in love with the House Wren. It could not be his beauty for he lacks the distinctive markings found on other birds, even other wrens. Even in good light you see only a small grayish-brown bird with lighter underparts. It is surely not his size for he is smaller than a sparrow. His song is a sort of spontaneous outburst of notes which give you more quantity than quality, with a liberal helping of scolding notes, so it is not his vocal efforts. He is not a good bird neighbor for he often punctures the eggs of other nesting birds in his area. It must be his independence that has won him favor. No other bird finds such an assortment of nesting boxes, all sizes, shapes and colors, some homemade, others purchased. Some he will use, while others offer no attraction. He may pass up a well-placed wren house to build in the pocket of an old coat hung in a shed. He likes boxes 8 to 10 feet above ground, not hidden by limbs. He prefers low shrubs, piles of brush or wood, or even open spots in heavy timber, for there he finds the insects and small spiders which form the major part of his food. Most of his hunting is either on or near the ground while nesting sites are seldom above 12 feet. He runs to large families and more than one brood is reared. - Great Horned Owl
Bubo virginianus The Great Horned Owl, largest of the eared owls, is found over a wide area and may be either light or dark in color, depending on the area where he is found. All specimens show a white throat, ear tufts and yellow eyes. This bird is almost 2 feet in length and can handle fair-sized animals when pressed by hunger. The hoot of this bird is deeper, slower and more uniform than that of the Barred Owl, and often can be heard as a sort of conversational note between 2 birds in the same area. It is given as a 2-note “Who-who,” and answered by a similar call from another bird some distance away. These calls are given on a different pitch. These owls nest early and often use old structures which were built by hawks, crows or eagles. Hollow trees or stone ledges furnish desirable locations. They are good parents and defend their home and young against all comers, including men. Crows and jays take delight in heckling these owls, but are careful to keep a safe distance, for Great Horned Owls see well in bright sunlight, altho they do most of their hunting in darkness. Their diet includes almost any type of animal life available, but rabbits, rats, squirrels and mice seem to be preferred. Some feed on starlings and pigeons which they find around city buildings. - Terrified Horse
Terrified Horse