Unlike its cousin the jackdaw, which commonly nests in the cliffs, the rook is not, perhaps, commonly associated with the immediate7 neighbourhood of the sea, but a colony close to my own home in Devonshire displays sufficiently8 interesting adaptation to estuarine9 conditions to be worth passing mention. Just in the same way that gulls11 make free of the wireworms on windswept ploughlands, so in early summer do the old rooks come sweeping12 down from the elms on the hill that overlooks my fishing ground and take their share of cockles and other muddy fare in the bank uncovered by the falling tide. Here, in company with gulls, turnstones, and other fowl of the foreshore, the rooks strut13 importantly up and down, digging their powerful bills deep in the ooze14 and occasionally[47] bullying15 weaker neighbours out of their hard-earned spoils. The rook is a villain16, yet there is something irresistible17 in the effrontery18 with which one will hop19 sidelong on a gorging20 gull10, which beats a hasty retreat before its sable21 rival, leaving some half-prized shellfish to be swallowed at sight or carried to the greedy little beaks22 in the tree-tops. While rooks are far more sociable than crows, the two are often seen in company, not always on the best of terms, but usually in a condition suggestive of armed neutrality. An occasional crow visits my estuary23 at low tide, but, though the bird would be a match for any single rook, I never saw any fighting between them. Possibly the crow feels its loneliness and realises that in case of trouble none of its brothers are there to see fair play. Yet carrion24 crows, like herons, are among the rook's most determined25 enemies, and cases of rookeries being destroyed by both birds are on record. On the other hand, though the heron is the far more powerful bird of the two, heronries have likewise been scattered26, and their trees appropriated, by rooks, probably in overwhelming numbers. Of the two the[48] heron is, particularly in the vicinity of a preserved trout27 stream, the more costly28 neighbour. Indeed it is the only other bird which nests in colonies of such extent, but there is this marked difference between herons and rooks, that the former are sociable only in the colony. When away on its own business, the heron is among the most solitary29 of birds, having no doubt, like many other fishermen, learnt the advantage of its own company.
One of the most remarkable30 habits in the rook is that of visiting the old nests in mid-winter. Now and again, it is true, a case of actually nesting at that season has been noticed, but the fancy for sporting round the deserted31 nests is something quite different from this. I have watched the birds at the nests on short winter days year after year, but never yet saw any confirmation32 of the widely accepted view that their object is the putting in order of their battered33 homes for the next season. It seems a likely reason, but in that case the birds would surely be seen carrying twigs34 for the purpose, and I never saw them do so before January. What other attraction the empty nurseries can[49] have for them is a mystery, unless indeed they are sentimental35 enough to like revisiting old scenes and cawing over old memories.
The proximity36 of a rookery does not affect all people alike. Some who, ordinarily dwelling37 in cities, suffer from lack of bird neighbours, would regard the deliberate destruction of a rookery as an act of vandalism. A few, as a matter of fact, actually set about establishing such a colony where none previously38 existed, an ambition that may generally be accomplished39 without extreme difficulty. All that is needed is to transplant a nest or two of young rooks and lodge40 them in suitable trees. The parent birds usually follow, rear the broods, and forthwith found a settlement for future generations to return to. Even artificial nests, with suitable supplies of food, have succeeded, and it seems that the rook is nowhere a very difficult neighbour to attract and establish.
Why are rooks more sociable than ravens42, and what do they gain from such communalism? These are favourite questions with persons informed with an intelligent passion for acquiring information, and the best[50] answer, without any thought of irreverence44, is "God knows!" It is most certain that we, at any rate, do not. So far from explaining how it was that rooks came to build their nests in company, we cannot even guess how the majority of birds came to build nests at all, instead of remaining satisfied with the simpler plan of laying their eggs in the ground that is still good enough for the petrels, penguins45, kingfishers, and many other kinds. Protection of the eggs from rain, frost, and natural enemies suggests itself as the object of the nest, but the last only would to some extent be furthered by the gregarious46 habit, and even so we have no clue as to why it should be any more necessary for rooks than for crows. To quote, as some writers do, the numerical superiority of rooks over ravens as evidence of the benefits of communal43 nesting is to ignore the long hostility47 of shepherds towards the latter birds on which centuries of persecution48 have told irreparably. Rooks, on the other hand, though also regarded in some parts of these islands as suspects, have never been harassed49 to the same extent; and if anything in the nature[51] of general warfare50 were to be inaugurated against them, the gregarious habit, so far from being a protection, would speedily and disastrously51 facilitate their extermination52. Another curious habit noticed in these birds is that of flying on fine evenings to a considerable height and then swooping53 suddenly to earth, often on their backs. These antics, comparable to the drumming of snipe and roding of woodcock, are probably to be explained on the same basis of sexual emotion.
The so-called parliament of the rooks probably owes much of its detail to the florid imagination of enthusiasts54, always ready to exaggerate the wonders of Nature; but it also seems to have some existence in fact, and privileged observers have actually described the trial and punishment of individuals that have broken the laws of the commune. I never saw this procedure among rooks, but once watched something very similar among the famous dogs of Constantinople, which no longer exist.
The most important problem however in connection with the rook is the precise extent to which the bird is the farmer's enemy or his friend. On the solution hangs the rook's fate[52] in an increasingly practical age, which may at any moment put sentiment on one side and decree for it the fate that is already overtaking its big cousin the raven41. Scotch55 farmers have long turned their thumbs down and regarded rooks as food for the gun, but in South Britain the bird's apologists have hitherto been able to hold their own and avert56 catastrophe57 from their favourite. The evidence is conflicting. On the one hand, it seems undeniable that the rook eats grain and potato shoots. It also snaps young twigs off the trees and may, like the jay and magpie58, destroy the eggs of game birds. On the other hand, particularly during the weeks when it is feeding its nestlings, it admittedly devours59 quantities of wireworms, leathergrubs, and weevils, as well as of couch grass and other noxious60 weeds, while some of its favourite dainties, such as thistles, walnuts61, and acorns62, will hardly be grudged63 at any time. It is not an easy matter to decide; and, if the rook is to be spared, economy must be tempered with sentiment, in which case the evidence will perhaps be found to justify64 a verdict of guilty, with a strong recommendation to mercy.
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1
boisterous
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adj.喧闹的,欢闹的 | |
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2
babble
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v.含糊不清地说,胡言乱语地说,儿语 | |
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3
fowl
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n.家禽,鸡,禽肉 | |
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sociable
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adj.好交际的,友好的,合群的 | |
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beak
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n.鸟嘴,茶壶嘴,钩形鼻 | |
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larder
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n.食物贮藏室,食品橱 | |
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immediate
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adj.立即的;直接的,最接近的;紧靠的 | |
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sufficiently
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adv.足够地,充分地 | |
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estuarine
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河口的,江口的 | |
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gull
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n.鸥;受骗的人;v.欺诈 | |
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gulls
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n.鸥( gull的名词复数 )v.欺骗某人( gull的第三人称单数 ) | |
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sweeping
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adj.范围广大的,一扫无遗的 | |
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strut
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v.肿胀,鼓起;大摇大摆地走;炫耀;支撑;撑开;n.高视阔步;支柱,撑杆 | |
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ooze
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n.软泥,渗出物;vi.渗出,泄漏;vt.慢慢渗出,流露 | |
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bullying
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v.恐吓,威逼( bully的现在分词 );豪;跋扈 | |
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villain
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n.反派演员,反面人物;恶棍;问题的起因 | |
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17
irresistible
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adj.非常诱人的,无法拒绝的,无法抗拒的 | |
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effrontery
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n.厚颜无耻 | |
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hop
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n.单脚跳,跳跃;vi.单脚跳,跳跃;着手做某事;vt.跳跃,跃过 | |
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20
gorging
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v.(用食物把自己)塞饱,填饱( gorge的现在分词 );作呕 | |
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sable
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n.黑貂;adj.黑色的 | |
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beaks
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n.鸟嘴( beak的名词复数 );鹰钩嘴;尖鼻子;掌权者 | |
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23
estuary
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n.河口,江口 | |
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carrion
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n.腐肉 | |
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determined
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adj.坚定的;有决心的 | |
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scattered
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adj.分散的,稀疏的;散步的;疏疏落落的 | |
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trout
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n.鳟鱼;鲑鱼(属) | |
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costly
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adj.昂贵的,价值高的,豪华的 | |
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solitary
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adj.孤独的,独立的,荒凉的;n.隐士 | |
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30
remarkable
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adj.显著的,异常的,非凡的,值得注意的 | |
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31
deserted
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adj.荒芜的,荒废的,无人的,被遗弃的 | |
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confirmation
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n.证实,确认,批准 | |
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battered
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adj.磨损的;v.连续猛击;磨损 | |
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34
twigs
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细枝,嫩枝( twig的名词复数 ) | |
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sentimental
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adj.多愁善感的,感伤的 | |
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proximity
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n.接近,邻近 | |
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dwelling
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n.住宅,住所,寓所 | |
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previously
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adv.以前,先前(地) | |
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accomplished
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adj.有才艺的;有造诣的;达到了的 | |
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40
lodge
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v.临时住宿,寄宿,寄存,容纳;n.传达室,小旅馆 | |
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41
raven
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n.渡鸟,乌鸦;adj.乌亮的 | |
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ravens
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n.低质煤;渡鸦( raven的名词复数 ) | |
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communal
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adj.公有的,公共的,公社的,公社制的 | |
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44
irreverence
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n.不尊敬 | |
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45
penguins
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n.企鹅( penguin的名词复数 ) | |
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gregarious
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adj.群居的,喜好群居的 | |
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47
hostility
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n.敌对,敌意;抵制[pl.]交战,战争 | |
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persecution
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n. 迫害,烦扰 | |
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49
harassed
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adj. 疲倦的,厌烦的 动词harass的过去式和过去分词 | |
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50
warfare
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n.战争(状态);斗争;冲突 | |
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51
disastrously
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ad.灾难性地 | |
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52
extermination
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n.消灭,根绝 | |
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53
swooping
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俯冲,猛冲( swoop的现在分词 ) | |
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54
enthusiasts
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n.热心人,热衷者( enthusiast的名词复数 ) | |
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55
scotch
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n.伤口,刻痕;苏格兰威士忌酒;v.粉碎,消灭,阻止;adj.苏格兰(人)的 | |
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56
avert
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v.防止,避免;转移(目光、注意力等) | |
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57
catastrophe
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n.大灾难,大祸 | |
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58
magpie
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n.喜欢收藏物品的人,喜鹊,饶舌者 | |
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59
devours
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吞没( devour的第三人称单数 ); 耗尽; 津津有味地看; 狼吞虎咽地吃光 | |
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60
noxious
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adj.有害的,有毒的;使道德败坏的,讨厌的 | |
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61
walnuts
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胡桃(树)( walnut的名词复数 ); 胡桃木 | |
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62
acorns
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n.橡子,栎实( acorn的名词复数 ) | |
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63
grudged
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怀恨(grudge的过去式与过去分词形式) | |
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64
justify
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vt.证明…正当(或有理),为…辩护 | |
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