CHAPTER X

WINGED LIFE

[Sidenote: The first day’s walk.]

The desert’s secrets of life and growth and death are not to be read

at a glance. The first day’s walk is usually a disappointment. You

see little more than a desolate waste. The light of the blue sky, the

subtle color of the air, the roll of the valleys, the heave of the

mountains do not reveal themselves at once. The vegetation you think

looks like a thin covering of dry sticks. And as for the animals, the

birds--the living things on the desert--they are not apparent at all.

[Sidenote: Tracks in the sand.]

[Sidenote: Scarcity of birds.]

But the casual stroll does not bring you to the end of the desert’s

resources. You may perhaps walk for a whole day and see not a beast or

a bird of any description. Yet they are here. Even in the lava-beds

where not even cactus will grow, and where to all appearance there

is no life whatever, you may see tracks in the sand where quail

and road-runners and linnets have been running about in search of

food. There are tracks, too, of the coyote and the wild-cat--tracks

following tracks. The animals and the birds belong to the desert or

the neighboring mountains; but they are not always on view. You meet

with them only in the early morning and evening when they are moving

about. In the middle of the day they are in the shadow of bush or rock

or lying in some cut bank or cave--keeping out of the direct rays of

the sun. The birds are not very numerous even when they come forth.

They prefer places that afford better cover. And yet as you make a

memorandum of each new bird you see you are surprised after a time to

find how many are the varieties.

[Sidenote: Dangers of bird-life.]

[Sidenote: No cover for protection.]

And the surprise grows when you think of the dangers and hardships that

continually harass bird-life here in the desert. It may be fancied

perhaps that the bird is exempt from danger because he has wings to

carry him out of the reach of the animals; but we forget that he has

enemies of his own kind in the air. And if he avoids the hawks by day,

how shall he avoid the owls by night? Where at night shall he go for

protection? There are no broad-leaved trees to offer a refuge--in fact

few trees of any sort. The bushes are not so high that a coyote cannot

reach to their top at a jump; nor are the spines and ledges of rock in

the mountains so steep that a wild-cat cannot climb up them.

[Sidenote: The food problem.]

[Sidenote: The heat and drouth again.]

[Sidenote: A bird’s temperature.]

No; the bird is subject to the same dangers as the animals and the

plants. Something is forever on his trail. He must always be on guard.

And the food problem, ever of vital interest to bird-life, bothers him

just as much as it does the coyote. There is little for him to eat

and nothing for him to drink; and hardly a resting-place for the sole

of his foot. Besides, it would seem as though he should be affected

by the intense heat more than he is in reality. Humanity at times has

difficulty in withstanding this heat, for though it is not suffocating,

it parches the mouth and dries up the blood so rapidly that if water is

not attainable the effect is soon apparent. The animals--that is, the

wild ones--are never fazed by it; but the domestic horse, dog, and cow

yield to it almost as readily as a man. And men and animals are all of

low-blood temperature--a man’s normal temperature being about 98 F. But

what of the bird in his coat of feathers which may add to or detract

from his warmth? What is his normal temperature? It varies with the

species, so far as I can ascertain by experiment, from 112 to 120 F.

Consider that blood temperature in connection with a surrounding air

varying from 100 to 125 F.! It would seem impossible for any life to

support it. One may well wonder what strange wings beat this glowing

air, what bird-life lives in this fiery waste!

[Sidenote: Innocent-looking birds with savage instincts.]

[Sidenote: The road-runner.]

Yet the desert-birds look not very different from their cousins of

the woods and streams except that they are thinner, more subdued in

color, somewhat more alert. They are very pretty, very innocent-looking

birds. But we may be sure that living here in the desert, enduring its

hardships and participating in its incessant struggle for life and for

the species, they have just the same savage instincts as the plants and

the animals. The sprightliness and the color may suggest harmlessness;

but the eye, the beak, the claw are designed for destruction. The

road-runner is one of the mildest-looking and most graceful birds of

the desert, but the spring of the wild-cat to crush down a rabbit

is not more fierce than the snap of the bird’s beak as he tosses a

luckless lizard. He is the only thing on the desert that has the

temerity to fight a rattlesnake. It is said that he kills the snake,

but as to that I am not able to give evidence.

[Sidenote: Wrens and fly-catchers.]

And it is not alone the bird of prey--not alone the road-runners,

the eagles, the vultures, the hawks, and the owls that are savage of

mood. Every little wisp of energy that carries a bunch of feathers

is endowed with the same spirit. The downward swoop of the cactus

wren upon a butterfly and the snip of his little scissors bill, the

dash after insects of the fly-catchers, vireos, swallows, bats, and

whip-poor-wills are just as murderous in kind as the blow of the condor

and the vice-like clutch of his talons as they sink into the back of a

rabbit. Skill and strength in the chase are absolutely necessary in a

desert where food is so scarce, and in proportion the little birds have

these qualities in common with the great.

[Sidenote: Development of special characteristics.]

[Sidenote: Birds of the air.]

And naturally, as in the case of the animals, the skill and the

strength develop along the line of the bird’s needs, producing that

quality of character, that fitness for the work cut out for him, to

which we have so often referred. There are birds that belong almost

solely to the kingdom of the air--birds like the condor, the vulture,

and the eagle. Upon the ground they move awkwardly, not having

better feet to walk with than ducks and geese. The talons are too

much developed for walking. When they rise from the ground they do

it heavily and with quick flapping wings. Not until they are fairly

started in the upper air do they show what wonderful wing-power they

possess.

[Sidenote: The brown-black vulture.]

[Sidenote: The vulture hunting.]

[Sidenote: The vulture sailing.]

The common brown-black vulture or turkey buzzard is the type of all the

wheelers and sailers. The “soaring eagle” of poetry is something of a

goose beside him. For the wings of the vulture bear him through wind,

sun, and heat, hour after hour, without a pause. To see him circling as

he hunts down a mountain range a hundred miles or more, one might think

that the abnormal breast-muscles never grew weary. He goes over every

foot of the ground with his eyes and at the same time watches every

other vulture in the sky. Let one of his fellows stop circling and drop

earthward on a long incline, and immediately he is followed by all the

black crew. They know instantly that something has been discovered.

But often the hunt is in vain, and then for whole days at a time those

motionless wings bear their burden apparently without fatigue. With no

food perhaps for a fortnight and never any water, that spare rack of

muscles sails the air with as little effort as floating thistle-down.

No one knows just how it is done. In blow or calm, against the wind or

with it, high in the blue or low over the ground, any place, anywhere,

and under any circumstances those wings cut through the air almost like

sunlight. You can hear a whizz like the flight of arrows as the bird

passes close over your head; but you cannot see the slightest motion in

the feathers.

[Sidenote: The southern buzzard.]

[Sidenote: The crow.]

The hot, thin air of the desert would seem a less favorable air for

sailing than the moister atmosphere of the south; but the vulture

of the tropics is not the equal of the desert-bird. He is heavier,

lazier, and more stupid--possibly because better fed. There are several

varieties in the family, the chief variants being the one with white

tipped wings and the one with a white eagle-like head. Neither of them

is as good on the wing as the black species, though none of them is to

be despised. Even the ordinary carrion crow of the desert is an expert

sailer compared with any of the crow family to be found elsewhere.

The exigencies of the situation seem to require wings developed for

long-distance flights; and the vultures, the crows, the eagles, the

hawks, all respond after their individual fashions.

[Sidenote: The great condor.]

The condor is perhaps the vulture’s peer in the matter of sailing. He

belongs to the vulture family, though very much larger than any of its

members, sometimes measuring fifteen feet across the wings and weighing

forty pounds. He is the largest bird on the continent. At the present

time he is occasionally seen wheeling high in air like a mere insect in

the great blue dome. It is said that he soars as high as twenty-five

thousand feet above the earth. But to-day he sails alone and his tribe

has grown less year by year. With the eagles he keeps well up in the

high sierras and builds a nest on the inaccessible peaks or along the

steep escarpments. He belongs to the desert only because it is one of

his hunting-grounds.

[Sidenote: The eagles and hawks.]

[Sidenote: Bats and owls.]

[Sidenote: The burrowing owl.]

This may be said of the eagles and the hawks. They hunt the desert

by day, but go home to the mountains at night. The owls are somewhat

different, not being given to long flight. The deep caves or wind-worn

recesses under mountain ledges furnish them abiding-places. These

caves also send forth at dusk a full complement of bats that seem not

different from the ordinary Eastern bats. The burrowing owl is perhaps

misnamed, though not misplaced. There is no evidence whatever, that I

have ever seen or heard, to show that he burrows. What happens is that

he crawls into some hole that is already burrowed instead of a cave or

recess in the rocks. A prairie-dog or badger hole is his preference.

That the place has inhabitants, including the tarantula and (it is

said) the rattlesnake, does not bother the owl. He walks in with his

mate and speedily makes himself at home. How the different families

get on together can be imagined by one person as well as by another.

They do not seem to pay any attention to each other so far as I have

observed. Ordinarily the desert animals, birds, and reptiles agree to

no such truce. They are at war from the start. I do not know that the

owls, the bats, the night-hawks have any special equipment for carrying

on their part of the war. Sometimes I have fancied they had larger

eyes than is usual with their kinds outside of the desert; but I have

no proof of this. Perhaps it is like the speculation as to whether the

buzzard sees or scents the carrion that he discovers so readily--hardly

amenable to proof.

[Sidenote: The ground birds.]

[Sidenote: The road-runner’s swiftness.]

[Sidenote: The vicious beak.]

All of the air-birds are strikingly developed in the wings and equally

undeveloped in the feet, while all the ground-birds of the desert

are just the reverse of this--that is, deficient in wings but strong

of foot and leg. The road-runner, or as he is sometimes called the

chaparralcock, is a notable instance of this. He is a lizard-eater,

and in order to eat he must first catch his lizard. Now this is by

no means an easy task. The ordinary gray, brown, or yellow lizard

is the swiftest dodger and darter there is in the sand, and even in

straight-line running he will travel too fast for an ordinary dog to

catch him. His facility, too, in dashing up, over, and under bowlders

is not to be underestimated. The road-runner’s task then is not an

easy one, and yet he seems to accomplish it easily. There is no great

effort about his pursuit and yet he generally manages to catch the

lizard. It is because his legs are specially constructed for running,

and his head, neck, and beak for darting. His wings are of little use.

When chased by a dog he will finally take to them, but only for about

fifty yards. Then he drops to the ground and starts on foot again. He

will run away from a man, and sometimes even a horse cannot keep up

with him. Oddly enough, he seems always to run a little sideways. The

long tail (used as a rudder) is carried a little to the right or the

left and gives this impression. When frightened, his top-knot is raised

like that of the pheasant, and he often runs with his beak open. It

is a most vicious beak for all that it looks not more blood-thirsty

than that of the crow. It snaps through a scorpion or a centipede like

a pair of sheep-shearers. And with all his energy and strength the

road-runner weighs only about a pound. He is a long-geared bird, but

not actually any larger than a pigeon.

[Sidenote: The desert-quail.]

[Sidenote: Wings of the quail.]

[Sidenote: Travelling for water.]

The blue valley-quail--whether of Arizona or California breeding--is

quite as strong of leg as the road-runner, though not perhaps so

swift. He does not care much about using his wings; and at best they

are not better than the rather poor average of quails’ wings. By that

I mean that all quails rise from cover with a great roar and bustle,

and they fly very fast for a short distance; but they are soon down

upon the ground, running and hiding. The flight of the quail, too,

is straight ahead. It is not possible for him to rise up over five

hundred feet of canyon wall, for instance, and even on an ordinary

mountain side he takes several flights before he reaches the summit.

The wings are not muscled like the legs, and that is because the quail

is a ground-bird. He gets his food there and spends most of his time

there. In the East Bob White always roosts upon the ground, but the

desert-quail is usually too clever to trust himself in such an exposed

place. He will travel miles to get into a cotton-wood tree at dusk, and

if there is water near at hand so much the better. He dearly loves the

water and the tree, but if he cannot get them he accepts the situation

philosophically and goes to sleep on a high ledge of rock with water

perhaps in his thought but not in his crop.

[Sidenote: Habits of quail.]

[Sidenote: His strong legs.]

Thanks to his capacity for travelling, the quail usually manages to

get enough of small seeds and insects to keep himself alive. He is a

great roamer--in the course of a day travelling over many miles of

country--and his quest is always food. He likes to be among the great

bowlders that lie along the bases of the mountains; and when disturbed

he flies and jumps from rock to rock, much to the discouragement of the

coyote that happens to be the disturber. When forced to rise he flies

perhaps for a hundred yards or more and then drops and begins running.

In the spring he mates, raises a brood, and teaches the young ones

the gentle art of running. In the fall he and his family of a dozen

or sixteen join with other families to make a great covey of several

hundred, or in the old days before the market-hunters came, several

thousand. And they all run. The bottom of the quail’s foot is always

itching for the ground; and he seems never so happy as when leaving the

enemy far behind him. His little legs take him through the brush so

fast that you cannot keep up with him. Every muscle in him is as tough

as a watch-spring. You may wound him, but you have not yet got him. He

will creep into some cactus patch or crawl down a snake-hole--elude you

in some way--and in the end die game just out of your reach.

[Sidenote: Bush-birds.]

[Sidenote: The woodpeckers and cactus.]

There are few trees upon the desert and few bushes of any size; yet

there are birds of the tree and the bush here just as there are birds

of the air and the ground. The most of them seem the same kind of

linnets, sparrows, and thrushes that are seen along the California

coast; though probably they have some peculiar desert characteristic.

I cannot see any difference between the little woodpeckers here and

the woodpeckers elsewhere; yet this desert variety flies from sahuaro

to sahuaro, alights on the spiny trunk with a little thump, and

immediately begins hitching himself up through the worst imaginable

rows of needles just as though he were climbing a plain pine-tree. The

ordinary turtle-dove with his red pigeon-feet alights on the top of the

same sahuaro, the wren bores holes in it and makes a nest within the

cylinder; and the dwarf thrush dashes in and out of tangled thickets of

cholla all day long, and yet none of them suffers any injury. It seems

incredible that birds not accustomed to the desert could do such things.

[Sidenote: Finches and mocking-birds.]

[Sidenote: The humming-bird.]

Possibly, too, these bush-birds--insect-devourers most of them--have

some special faculty for catching their prey, though I have not

been able to discover it. The fly-catchers, the mocking-birds, the

finches, in a land of plenty are quick enough in breaking the back of a

butterfly or beetle, and any extra energy would seem superfluous. Still

there is no telling what fine extra stimulus lies in an empty crop. And

crops are usually empty on the desert. Even the little humming-bird

has difficulty in picking a living. In blossom time he is, of course,

in fine condition, but I have seen him dashing about in the fall when

nothing at all was in bloom, and evidently none the worse for some

starvation. He is a swifter flyer than the ordinary bird and is also

duller in coloring, but in other respects he seems not different. He

breeds on the desert, building his nest in the pitahaya; and he and

his mate then have a standing quarrel with their neighbors for the

rest of the summer. There is not in the whole feathered tribe a more

quarrelsome scrap of vivacity than the humming-bird.

[Sidenote: Doves and grosbeaks.]

[Sidenote: The lark and flicker.]

[Sidenote: Jays and magpies.]

[Sidenote: Water-fowl.]

The dwarf dove common to Sonora, the oven-bird, the red grosbeak, and

many other of the smaller birds known to civilization, are found on

the desert; but apparently with no special faculty for overcoming its

hardships. This is due perhaps to the fact that they are not always

there--are not exclusively desert-birds. Nor do any of the migratory

birds belong to the desert, though they stop here for weeks at a time

in their flights north or south. At almost any season of the year one

sees the cow-blackbird and the smaller crow-blackbird. The mocking-bird

comes only in the spring and fall, and the lark in early summer. The

lark looks precisely like the Eastern bird, but his note is changed;

whereas the flicker has changed the color under his wings from yellow

to pink, but not his note. The robin is no whit different from the

front-lawn robin of our childhood; and the bobolink rising from

salt-bush and yucca, singing as he rises, is the bobolink of ancient

days. At times there are troops of magpies that come and go across the

waste, and at other times troops of blue-jays. And high in air through

the warmth of spring and the cold of autumn there are great flocks of

ducks, geese, brant, divers, shags, willet, curlew, swinging along

silently to the southern or northern waterways. They seldom pause,

even when following the Colorado River, unless in need of water. On

the mesas and uplands one sometimes sees a group of sand-hill cranes

walking about and indulging in a crazy dance peculiarly their own, but

the sight is no longer a common one.

[Sidenote: Beetles and worms.]

[Sidenote: Fighting destruction by breed.]

And again the prey--what of the prey? Has Nature left the beetles,

the bugs, the worms, the bees, completely at the pleasure of the

bird’s beak? No; not completely, though it must be acknowledged that

she has not provided much defensive armor for them individually. She

incases her beautiful blue and yellow beetles in hard shells that other

insects cannot break through, but they are flimsy defences against the

mocking-bird. To bugs and worms and bees she gives perhaps a sting,

deadly enough when thrust into a spider, but useless again when used

in defence against a cactus-thrush. And this is where Nature shows her

absolute indifference to the life or the death of the individual. She

allows the bugs and beetles to be slaughtered like the mackerel in the

sea. But she is a little more careful about preserving the species. And

how does she do this without preserving the individual? Why, simply

by increasing the number of individuals, by breed, by fertility, by

multiplicity. Thousands are annually slaughtered; yes, but thousands

are annually bred. What matter about their lives or deaths provided

they do not increase or decrease as a species!

[Sidenote: The blue and green beetles.]

[Sidenote: Butterflies.]

[Sidenote: Design and character.]

The insects on the desert are mere flashes of life--pin-points of

energy--but not without purpose and not without beauty. The beasts and

the birds may be bleached brown or gray by the sun; but the insects are

many of them as gay as those of the tropics. The ordinary beetles that

a chance turn of a stone reveals are like scarabs of gold, turquoise,

azurite, bronze, platinum, hurrying and scurrying out of the way. The

tarantula-wasp, with his gorgeous orange-colored body and his blue

wings, is like a bauble made of precious stones flickering along the

ground. The great dragon-fly with his many lensed eyes, the bees with

black and yellow bodies, the butterflies with bright-hued wings, the

white and gray millers--all of them dwellers in the sands--are spots of

light and color that illumine the desert as the rich jewel the Ethiop’s

ear. The wings of gauze that bear the ordinary fly upon the air, the

feet of ebony that carry the plain black beetle along the rocks, are

made with just as much care and skill as the wings of the condor and

the foot of the road-runner. Nature in every product of her hand shows

the completeness of her workmanship. She made the wings and the legs

for a purpose and they fulfil that purpose. They are without flaw and

above reproach. Once more, therefore, have they character and fitness,

and once more, therefore, are they beautiful.

[Sidenote: Beauty of birds.]

[Sidenote: Beauty also of reptiles.]

I need not now argue beauty in the birds, the beetles, and the

butterflies. You will admit it without argument. The slate-blue of the

quail, the gay red of the grosbeak, the charm of the rock-wren, the

vivacity of the bobolink or the scale-runner, captivate you and compel

your sympathy and admiration. Yes; but everyone of them is, after

his kind, as much of a butcher, just as much of a destroyer, as the

wild-cat or the yellow rattlesnake. And they have no more character

and perhaps less fitness for the desert life than the sneaking coyote

or the flattened lizard which you do not admire. But why are not the

coyote and the lizard beautiful too? Why not the beauty of the horned

toad and the serpent? Are we never to love or to admire save where form

and color tickle the eye? Are these forever to monopolize the name of

beauty and gather to themselves the world’s applause?

[Sidenote: Nature’s work all purposeful.]

[Sidenote: Precious jewel of the toad.]

If we could but rid ourselves of the false ideas, which, taken _en

masse_, are called education, we should know that there is nothing ugly

under the sun, save that which comes from human distortion. Nature’s

work is all of it good, all of it purposeful, all of it wonderful, all

of it beautiful. We like or dislike certain things which may be a way

of expressing our prejudice or our limitation; but the work is always

perfect of its kind irrespective of human appreciation. We may prefer

the sunlight to the starlight, the evening primrose to the bisnaga,

the antelope to the mountain-lion, the mocking-bird to the lizard; but

to say that one is good and the other bad, that one is beautiful and

the other ugly, is to accuse Nature herself of preference--something

which she never knew. She designs for the cactus of the desert as

skilfully and as faithfully as for the lily of the garden. Each in its

way is suited to its place, and each in its way has its unique beauty

of character. And so, more truly perhaps than Shakespeare himself knew,

the toad called ugly and venomous, still holds a precious jewel in its

head.

The desert · 第 10 / 12 章