3 Importance of Concealment as Influencing Colour

Concealment², more or less complete, is useful to many animals, and absolutely essential to some. Those which have numerous enemies from which they cannot escape by rapidity of motion, find safety in concealment. Those which prey³ upon others must also be so constituted as not to alarm them by their presence or their approach, or they would soon die of hunger. Now it is remarkable⁴ in how many cases nature gives this boon⁵ to the animal, by colouring it with such tints⁶ as may best serve to enable it to escape from its enemies or to entrap⁷ its prey. Desert animals as a rule are desert-coloured. The lion is a typical example of this, and must be almost invisible when crouched⁸ upon the sand or among desert rocks and stones. Antelopes⁹ are all more or less sandy-coloured. The camel is preeminently so. The Egyptian cat and the Pampas cat are sandy or earth-coloured. The Australian kangaroos are of the same tints, and the original colour of the wild horse is supposed to have been a sandy or clay-colour.

The desert birds are still more remarkably¹⁰ protected by their assimilative hues¹¹. The stonechats, the larks¹², the quails¹⁴, the goatsuckers and the grouse¹⁵, which abound¹⁶ in the North African and Asiatic deserts, are all tinted¹⁷ and mottled so as to resemble with wonderful accuracy the average colour and aspect of the soil in the district they inhabit. The Rev¹⁸. H. Tristram, in his account of the ornithology¹⁹ of North Africa in the 1st volume of the “Ibis,” says: “In the desert, where neither trees, brush-wood, nor even undulation of the surface afford the slightest protection to its foes²⁰, a modification²¹ of colour which shall be assimilated to that of the surrounding country, is absolutely necessary. Hence without exception the upper plumage of every bird, whether lark¹³, chat, sylvain, or sand-grouse, and also the fur of all the smaller mammals, and the skin of all the snakes and lizards²², is of one uniform isabelline or sand colour.” After the testimony²³ of so able an observer it is unnecessary to adduce further examples of the protective colours of desert animals.

Almost equally striking are the cases of arctic animals possessing the white colour that best conceals²⁴ them upon snowfields and icebergs²⁵. The polar bear is the only bear that is white, and it lives constantly among snow and ice. The arctic fox, the ermine and the alpine²⁶ hare change to white in winter only, because in summer white would be more conspicuous²⁷ than any other colour, and therefore a danger rather than a protection; but the American polar hare, inhabiting regions of almost perpetual snow, is white all the year round. Other animals inhabiting the same Northern regions do not, however, change colour. The sable²⁸ is a good example, for throughout the severity of a Siberian winter it retains its rich brown fur. But its habits are such that it does not need the protection of colour, for it is said to be able to subsist²⁹ on fruits and berries in winter, and to be so active upon the trees as to catch small birds among the branches. So also the woodchuck of Canada has a dark-brown fur; but then it lives in burrows³⁰ and frequents river banks, catching³¹ fish and small animals that live in or near the water.

Among birds, the ptarmigan is a fine example of protective colouring. Its summer plumage so exactly harmonizes with the lichen³²-coloured stones among which it delights to sit, that a person may walk through a flock of them without seeing a single bird; while in winter its white plumage is an almost equal protection. The snow-bunting, the jer-falcon, and the snowy owl³³ are also white-coloured birds inhabiting the arctic regions, and there can be little doubt but that their colouring is to some extent protective.

Nocturnal animals supply us with equally good illustrations. Mice, rats, bats, and moles³⁴ possess the least conspicuous of hues, and must be quite invisible at times when any light colour would be instantly seen. Owls³⁵ and goatsuckers are of those dark mottled tints that will assimilate with bark and lichen, and thus protect them during the day, and at the same time be inconspicuous in the dusk.

It is only in the tropics, among forests which never lose their foliage³⁶, that we find whole groups of birds whose chief colour is green. The parrots are the most striking example, but we have also a group of green pigeons in the East; and the barbets, leaf-thrushes, bee-eaters, white-eyes, turacos, and several smaller groups, have so much green in their plumage as to tend greatly to conceal¹ them among the foliage.

1 conceal   

v.隐藏，隐瞒，隐蔽

参考例句：

• He had to conceal his identity to escape the police.为了躲避警方，他只好隐瞒身份。
• He could hardly conceal his joy at his departure.他几乎掩饰不住临行时的喜悦。

2 concealment   

n.隐藏, 掩盖，隐瞒

参考例句：

• the concealment of crime 对罪行的隐瞒
• Stay in concealment until the danger has passed. 把自己藏起来，待危险过去后再出来。

3 prey   

n.被掠食者，牺牲者，掠食；v.捕食，掠夺，折磨

参考例句：

• Stronger animals prey on weaker ones.弱肉强食。
• The lion was hunting for its prey.狮子在寻找猎物。

4 remarkable   

adj.显著的，异常的，非凡的，值得注意的

参考例句：

• She has made remarkable headway in her writing skills.她在写作技巧方面有了长足进步。
• These cars are remarkable for the quietness of their engines.这些汽车因发动机没有噪音而不同凡响。

5 boon   

n.恩赐，恩物，恩惠

参考例句：

• A car is a real boon when you live in the country.在郊外居住，有辆汽车确实极为方便。
• These machines have proved a real boon to disabled people.事实证明这些机器让残疾人受益匪浅。

6 tints   

色彩( tint的名词复数 )； 带白的颜色； （淡色）染发剂； 痕迹

参考例句：

• leaves with red and gold autumn tints 金秋时节略呈红黄色的树叶
• The whole countryside glowed with autumn tints. 乡间处处呈现出灿烂的秋色。

7 entrap   

v.以网或陷阱捕捉，使陷入圈套

参考例句：

• The police have been given extra powers to entrap drug traffickers.警方已经被进一步授权诱捕毒贩。
• He overturned the conviction,saying the defendant was entrapped.他声称被告是被诱骗的，从而推翻了有罪的判决。

8 crouched   

v.屈膝，蹲伏( crouch的过去式和过去分词 )

参考例句：

• He crouched down beside her. 他在她的旁边蹲了下来。
• The lion crouched ready to pounce. 狮子蹲下身，准备猛扑。

9 antelopes   

羚羊( antelope的名词复数 )； 羚羊皮革

参考例句：

• One jump, and you're out, and we'll run for it like antelopes.' 你只要一跳就出来了，我们可以像羚羊那样飞快地逃掉。”
• Most antelopes can withhold their young for weeks, even months. 绝大部分羚羊能把分娩期推迟几个星期，甚至几个月。

10 remarkably   

ad.不同寻常地，相当地

参考例句：

• I thought she was remarkably restrained in the circumstances. 我认为她在那种情况下非常克制。
• He made a remarkably swift recovery. 他康复得相当快。

11 hues   

色彩( hue的名词复数 )； 色调； 信仰； 观点

参考例句：

• When the sun rose a hundred prismatic hues were reflected from it. 太阳一出，更把它映得千变万化、异彩缤纷。
• Where maple trees grow, the leaves are often several brilliant hues of red. 在枫树生长的地方，枫叶常常呈现出数种光彩夺目的红色。

12 larks   

n.百灵科鸟（尤指云雀）( lark的名词复数 )；一大早就起床；鸡鸣即起；（因太费力而不想干时说）算了v.百灵科鸟（尤指云雀）( lark的第三人称单数 )；一大早就起床；鸡鸣即起；（因太费力而不想干时说）算了

参考例句：

• Maybe if she heard the larks sing she'd write. 玛丽听到云雀的歌声也许会写信的。 来自名作英译部分
• But sure there are no larks in big cities. 可大城市里哪有云雀呢。” 来自名作英译部分

13 lark   

n.云雀，百灵鸟；n.嬉戏，玩笑；vi.嬉戏

参考例句：

• He thinks it cruel to confine a lark in a cage.他认为把云雀关在笼子里太残忍了。
• She lived in the village with her grandparents as cheerful as a lark.她同祖父母一起住在乡间非常快活。

14 quails   

鹌鹑( quail的名词复数 )； 鹌鹑肉

参考例句：

• Speckled quails rustled in the underbrush. 鹌鹑在矮树丛里沙沙作响。
• I went out to pop some quails. 我出去打几只鹌鹑。

15 grouse   

n.松鸡；v.牢骚，诉苦

参考例句：

• They're shooting grouse up on the moors.他们在荒野射猎松鸡。
• If you don't agree with me,please forget my grouse.如果你的看法不同，请不必介意我的牢骚之言。

16 abound   

vi.大量存在；(in，with)充满，富于

参考例句：

• Oranges abound here all the year round.这里一年到头都有很多橙子。
• But problems abound in the management of State-owned companies.但是在国有企业的管理中仍然存在不少问题。

17 tinted   

adj. 带色彩的 动词tint的过去式和过去分词

参考例句：

• a pair of glasses with tinted lenses 一副有色镜片眼镜
• a rose-tinted vision of the world 对世界的理想化看法

18 rev   

v.发动机旋转，加快速度

参考例句：

• It's his job to rev up the audience before the show starts.他要负责在表演开始前鼓动观众的热情。
• Don't rev the engine so hard.别让发动机转得太快。

19 ornithology   

n.鸟类学

参考例句：

• He found his vocation in ornithology.他发现自己适于专攻鸟类学。
• His main interests are botany and ornithology.他主要对植物学和鸟类学感兴趣。

20 foes   

敌人，仇敌( foe的名词复数 )

参考例句：

• They steadily pushed their foes before them. 他们不停地追击敌人。
• She had fought many battles, vanquished many foes. 她身经百战，挫败过很多对手。

21 modification   

n.修改，改进，缓和，减轻

参考例句：

• The law,in its present form,is unjust;it needs modification.现行的法律是不公正的，它需要修改。
• The design requires considerable modification.这个设计需要作大的修改。

22 lizards   

n.蜥蜴( lizard的名词复数 )

参考例句：

• Nothing lives in Pompeii except crickets and beetles and lizards. 在庞培城里除了蟋蟀、甲壳虫和蜥蜴外，没有别的生物。 来自辞典例句
• Can lizards reproduce their tails? 蜥蜴的尾巴断了以后能再生吗？ 来自辞典例句

23 testimony   

n.证词；见证，证明

参考例句：

• The testimony given by him is dubious.他所作的证据是可疑的。
• He was called in to bear testimony to what the police officer said.他被传入为警官所说的话作证。

24 conceals   

v.隐藏，隐瞒，遮住( conceal的第三人称单数 )

参考例句：

• He conceals his worries behind a mask of nonchalance. 他装作若无其事，借以掩饰内心的不安。 来自《简明英汉词典》
• Drunkenness reveals what soberness conceals. 酒醉吐真言。 来自《简明英汉词典》

25 icebergs   

n.冰山，流冰( iceberg的名词复数 )

参考例句：

• The drift of the icebergs in the sea endangers the ships. 海上冰山的漂流危及船只的安全。 来自《简明英汉词典》
• The icebergs towered above them. 冰山高耸于他们上方。 来自辞典例句

26 alpine   

adj.高山的；n.高山植物

参考例句：

• Alpine flowers are abundant there.那里有很多高山地带的花。
• Its main attractions are alpine lakes and waterfalls .它以高山湖泊和瀑布群为主要特色。

27 conspicuous   

adj.明眼的，惹人注目的；炫耀的，摆阔气的

参考例句：

• It is conspicuous that smoking is harmful to health.很明显，抽烟对健康有害。
• Its colouring makes it highly conspicuous.它的色彩使它非常惹人注目。

28 sable   

n.黑貂；adj.黑色的

参考例句：

• Artists' brushes are sometimes made of sable.画家的画笔有的是用貂毛制的。
• Down the sable flood they glided.他们在黑黝黝的洪水中随波逐流。

29 subsist   

vi.生存，存在，供养

参考例句：

• We are unable to subsist without air and water.没有空气和水我们就活不下去。
• He could subsist on bark and grass roots in the isolated island.在荒岛上他只能靠树皮和草根维持生命。

30 burrows   

n.地洞( burrow的名词复数 )v.挖掘（洞穴），挖洞( burrow的第三人称单数 )；翻寻

参考例句：

• The intertidal beach unit contains some organism burrows. 潮间海滩单元含有一些生物潜穴。 来自辞典例句
• A mole burrows its way through the ground. 鼹鼠会在地下钻洞前进。 来自辞典例句

31 catching   

adj.易传染的，有魅力的，迷人的，接住

参考例句：

• There are those who think eczema is catching.有人就是认为湿疹会传染。
• Enthusiasm is very catching.热情非常富有感染力。

32 lichen   

n.地衣, 青苔

参考例句：

• The stone stairway was covered with lichen.那石级长满了地衣。
• There is carpet-like lichen all over the moist corner of the wall.潮湿的墙角上布满了地毯般的绿色苔藓。

33 owl   

n.猫头鹰，枭

参考例句：

• Her new glasses make her look like an owl.她的新眼镜让她看上去像只猫头鹰。
• I'm a night owl and seldom go to bed until after midnight.我睡得很晚，经常半夜后才睡觉。

34 moles   

防波堤( mole的名词复数 )； 鼹鼠； 痣； 间谍

参考例句：

• Unsightly moles can be removed surgically. 不雅观的痣可以手术去除。
• Two moles of epoxy react with one mole of A-1100. 两个克分子环氧与一个克分子A－1100反应。

35 owls   

n.猫头鹰( owl的名词复数 )

参考例句：

• 'Clumsy fellows,'said I; 'they must still be drunk as owls.' “这些笨蛋，”我说，“他们大概还醉得像死猪一样。” 来自英汉文学 - 金银岛
• The great majority of barn owls are reared in captivity. 大多数仓鸮都是笼养的。 来自辞典例句

36 foliage   

n.叶子，树叶，簇叶

参考例句：

• The path was completely covered by the dense foliage.小路被树叶厚厚地盖了一层。
• Dark foliage clothes the hills.浓密的树叶覆盖着群山。