Terrestrial animal

“ As regards barriers to the free dispersal of nonvolant terrestrial animals these may be grouped under two main heads, namely, climatic and geographical, of which the second is by far the more important. At the present day a certain number of animals are fitted to live respectively only in hot and in cold climates. ”

“ We know, that in these forests, perhaps near enough to see us, though their forms are hidden by their likeness to their leafy surroundings and the dappled sunlight, are animals as various as elephants, tigers, leopards, foxes, squirrels, and bats; birds as various as hawks, parrots, and finches; and insects from butterflies, bees, and wasps to crickets, beetles, and ants. The forest, we know, in addition to all the wealth of tree and plant life, is teeming with animal and insect life, though of this we are able to see very little, so carefully do animals conceal themselves. ”

“ Most mammals are terrestrial, living, that is to say, not only on the land, but on the ground, and are herbivorous in habit, subsisting chiefly or exclusively upon vegetable substances, but there are many departures from this mode of life. It should be explained, however, that the term terrestrial is frequently used in a more comprehensive sense for all land mammals, as distinguished from those that are aquatic or marine. ”

“ Naturalists know well enough how indeterminate the harmonies between a fauna and its environment are. An animal may better his chances of existence in either of many ways,—growing aquatic, arboreal, or subterranean ”

“ Lest the migration of creatures should cease to be a thing of wonder to us, Nature organizes once in a way a monster excursion, sometimes of rats, sometimes of deer, but most frequently of birds, to remind man of the marvellous instinct that draws the animal world from place to place or from zone to zone. ”

“ The far greater peculiarity of the land-birds, namely, twenty-five out of twenty-six being new species, or at least new races, compared with the waders and web-footed birds, is in accordance with the greater range which these latter orders have in all parts of the world. We shall hereafter see this law of aquatic forms, whether marine or fresh water, being less peculiar at any given point of the earth’s surface than the terrestrial forms of the same classes, strikingly illustrated in the shells, and in a lesser degree in the insects of this archipelago. ”

“ It becomes torpid [Pg 291] when the fruit or prey it lives on is not in season, and regains its activity when its food is ready.
Eyes are found in light; ears in auricular air; feet on land; fins in water; wings in air; and each creature where it was meant to be, with a mutual fitness. Every zone has its own Fauna. There is adjustment between the animal and its food, its parasite, its enemy. Balances are kept. It is not allowed to diminish in numbers, nor to exceed. The like adjustments exist for man. ”

“ The hardest part of my walk now began, as I had left the easy slopes of the shales behind. Here amongst the rocks, as would be expected, animal life in the way of birds, reptiles, and insects became more abundant, and I began to keep a sharp look-out, especially for the smaller Reptilia ”

“ Where we find the remains of quadrupeds corresponding to our ruminating animals, we infer not only land, but grassy meadows also, and an extensive vegetation; where we find none but marine animals, we know the ocean must have covered the earth; the remains of large reptiles, representing, though in gigantic size, the half aquatic, half terrestrial reptiles of our own period, indicate to us the existence of spreading marshes still soaked by the retreating waters ”

“ Slow and careless in his movements, this animal wanders through his native plains with a heavy step, carrying his huge head so low that his nose almost touches the ground, and stopping at intervals, to crop some favorite plant, or in playfulness to plough up the ground with his horn, throwing the mud and stones behind him. ”

“ Nor is the representation of vegetable and animal life less characteristic in the temperate zone, where the oak is monarch of the woods, with all his attendant court of elms, walnuts, beeches, birches, maples, and the like, where birds of more sober hues, but sweeter voices, take the place of the brilliant parrots and many-tinted humming-birds of the tropical forest; while buffaloes, bears, wolves, foxes, and deer represent the larger Mammalia. ”

“ Aquatic mammals which pass their lives entirely, or, for the greater part, in the water are, of course, subject to very different laws of distribution from those of the terrestrial forms. As regards aquatic mammals, land is of course an impassable barrier to their extension, and, subject to restrictions in certain cases, water offers them a free passage. ”

“ We know, however, with certainty that the dark and luxuriant forests of the coal period were not destitute of animal life. Reptiles [122] crept under their shade, land snails and millipedes fed on the rank leaves and decaying vegetable matter, and insects flitted through the air of the sunnier spots. Great interest attaches to these creatures; perhaps the first-born species in some of their respective types, and certainly belonging to one of the oldest land faunas, and presenting prototypes of future forms equally interesting to the geologist and the zoologist. ”

“ Such of them as have been recognised are found to belong to species now growing only in the torrid zone; thus adding to the evidence afforded by the animal remains of the great change that must have taken place in the climate. ”

“ Let us also place there the animal life natural to the willow and its plants—the flies, beetles, and other insects, with the winged creatures who do battle with them, such as the aquatic dragon-flies, gleaming like burnished steel, who catch them in the air, the water-wagtails who, with their tails cocked, pursue them to earth, and the kingfishers who lie in wait for them at the water's edge. ”

“ ANIMAL LIFE IN THE VIRGIN FORESTS:—THE GREAT APES. IT is of their own free choice, to shelter themselves from the burning arrows of the sun, to enjoy the dense shadows and delicious coolness of the great trees, and, without doubt, to avoid the attacks of men, that the elephant and the rhinoceros are denizens of the forest. But a certain number of Mammals Nature seems to have specially designed to people the forests, and for whom their general organization, and, above all, the structure of their locomotive organs, appear to have left the selection of no other abode. ”

“ It was of course always known that certain creatures gained protection by their resemblance to their normal surroundings, as in the case of white arctic animals, the yellow or brown tints of those living in deserts, and the green hues of many birds and insects surrounded by tropical vegetation. ”

“ In the sea, the tropical plains with their tangled vegetation and plentiful animal life are represented by the still more uniform plain forming the submerged continental 13 shelf with its strange forests of flowerless plants, the seaweeds. These submarine jungles shelter hosts of animal species, many of which swarm in countless myriads. This life embraces all grades of invertebrates, such as the microscopic protozoa, sponges, radiate animals like the coral-polyps, starfishes, sea-urchins, etc., and crustaceans in vast variety, and, among vertebrates, includes fishes, reptiles, and mammals. ”

“ Protective colours are exceedingly prevalent in nature, comprising those of all the white arctic animals, the sandy-coloured desert forms, and the green birds and insects of tropical forests. It also comprises thousands of cases of special resemblance—of birds to the surroundings of their nests, and especially of insects to the bark, leaves, flowers, or soil, on or amid which they dwell. Mammalia, fishes, and reptiles, as well as mollusca and other marine invertebrates, present similar phenomena ”

“ The field-mice, land and water rats, squirrels, weasels, and badgers, have their houses above and below ground, while insects are to be found everywhere, testifying to the abundance of life. Not content, moreover, with filling the water and covering the land, this same silent power peoples the atmosphere, where tiny bats, butterflies, bees, and winged insects of all forms and shapes and colors, fight their way through the ocean of air, while birds, large and small, sail among its invisible waves. ”

“ The incapacity of migrating across a wide sea is more clear in the case of terrestrial mammals than perhaps with any other organic beings; and, accordingly, we find no inexplicable instances of the same mammals inhabiting distant points of the world. ”

“ We know that these arose successively, primitive birds like the ostriches being older than higher forms like the parrots and singing birds; the pouched marsupials preceding the antelopes and the lion; the lemurs coming before the man-like apes. Each wave of life spread over the whole area producing after its kind; then, pressing round the northern land area, it met a thousand different conditions of environment, different foods, enemies, and climates, and broke up into different genera and species. ”

“ The smaller mammals live everywhere, from the tropical end of Florida to the uttermost lands of the frozen North, and from the seashore to the limit of vegetation on the high mountains. The heaviest forests, open meadows, rugged mountain slopes, arctic barrens, and sun-scorched desert plains all have their small four-footed habitants. Many modifications of parts and organs of the various species have been necessary to adapt the small mammals to specialized modes of life. ”

“ These animals, in general, delight in the thickest forests, and often frequent the borders of rivers, and the environs of solitary habitations, where they surprise their prey, and seize equally the tame and wild animals that come there to drink. ”

“ Lurking in the dense reeds, or tangled herbage that grows rank and teeming at the edges of rivers in hot climates, or under the mangroves that interweave their myriad roots in arches above the water, or concealed among the bleaching trunks and branches of trees that have fallen into the stream, these huge reptiles watch for the approach of a living prey, or feed at leisure on the putrid carcases with which the waters daily supply them. ”

“ The cold-blooded vertebrates, including fish, amphibians, and reptiles, play a significant role in the balance of life in the park, feeding upon each other and upon lesser animals and in turn being food for larger predators such as herons, hawks, raccoons, and otters. ”

“ They walk with difficulty, and their flight is clumsy, their favorite position being on a perch at the summit of lofty trees. Great flocks of these haunt the forests of the warmer regions of the Old World, especially Africa, India, and the Oceanic Archipelago. They build their nests in the hollows of trees. They are omnivorous. The fruits, seeds, and insects of those regions are their principal food; yet they will not refuse flesh. ”

“ The Animal Kingdom consists of sentient beings, that enliven the external parts of the earth. They possess the powers of voluntary motion, respire air, and are forced into action by the cravings of hunger or the parching of thirst, by the instincts of animal passion, or by pain. Like the vegetable kingdom, they are limited within the boundaries of certain countries by the conditions of climate and soil; and some of the species prey upon each other. Linnaeus has divided them into six classes;—Mammalia, Birds, Fishes, Amphibious Animals, Insects, and Worms. ”

“ Birds of every hue, gems of the air, glittered in our pathway; a vast number of the cormorant species were busy in gobbling up frogs, toads, and snakes; the eagle and the vulture, too, were soaring over our heads, looking out for the prey these regions afford them in such abundance. Every step we took frightened up flocks of the smaller feathered tribe, and brought to view myriads of other living things, such as slugs, snails, and insects of every variety. ”

“ In temperate and arctic lands such numbers of large mammals could exist only where the vegetation not only sufficed for summer needs, but retained its nourishing qualities through the winter. In the sea the vast numbers of seals, sea-lions, walruses, and whales of many kinds could be maintained only by a limitless profusion of fishes and other marine life. ”

“ The great majority of the insects and the birds, the apes, the squirrels, and, in general, all the arboreal animals, awake and put themselves in motion at the first glimpse of day, and animate the forest with their murmurs, their songs, their utterances, their lively sports and frolicsome gambols. ”

“ Moreover, each species on the confines of its range, where it exists in lessened numbers, will, during fluctuations in the number of its enemies or of its prey, or in the nature of the seasons, be extremely liable to utter extermination ”

“ Fauna.—The most common wild animals are deer, rabbits, squirrels, raccoons, skunks, woodchucks and muskrats. There are some porcupines, red foxes, minks and martens, but the moose, wolf and lynx are practically extinct. ”

“ Although tree-frequenting animals, the greater part of their activities is confined to the ground, especially along the margins of water-courses. While almost wholly nocturnal in habits, they are occasionally encountered abroad during the day. ”

“ It is true that certain of our domesticated animals, such as the horse, the dog, and most cattle, follow men from the Arctic to the Antarctic Circle, and that sundry insect pests appear to demand nothing of Nature save the presence of man ”

“ Nature's highest types, surpassing all others in exquisite beauty of form, brilliant colouring, and perfect melody, can never be known to our woods and groves. These rarest avian gems may not be removed from their setting, and to those who desire to know them in their unimaginable lustre, it will always be necessary to cross oceans and penetrate into remote wildernesses. ”