中英美文背誦：黑猩猩
The most striking single fact about chimpanzees is the flexibility of their social life, the lack of any rigid form of organization. It represents about as far a departure from the baboon type of organization as one can find among the higher primates, and serves to emphasize the great variety of primate adaptations. Chimpanzees are more human than baboons, or rather they jibe better with the way we like to picture ourselves, as free-wheeling individuals who tend to be unpredictable, do not take readily to any form of regimentation, and are frequently charming. (Charm is relatively rare among baboons.) Two researchers have described what they found during more than eight months spent among chimpanzees in their natural habitat the forest:"We were quite surprised to observe that there is no single distinct social unit in chimpanzee society. Not only is there no ’family’ or ’harem’ organization; neither is there a ’troop’ organization - that is to say, no particular chimpanzees keep permanently together. On the contrary, individuals move about at will, alone or in small groups best described as bands, which sometimes form into large aggregations. They leave their associates if they want to, and join up with new ones without conflict. " The general practice is best described as "easy come, easy go", although there are certain group-forming tendencies. As a rule himpanzees move about in one of four types of band: adult males only; mothers and offspring and occasionally a few other females; adults and adolescents of both sexes, but no mothers with young and representatives of all categories mixed together. The composition of bands may change a number of times during the course of a day as individuals wander off and groups split or combine with other groups. On the other hand, certain individuals prefer one another’s company. One of the researchers observed that four males often roamed together over a four-month period, and mothers often associated with their older offsprings.
黑猩猩最突出的一個(gè)特征是它們社會(huì)生活的靈活性，即缺乏固定的組織形式。 它的這一特征與狒狒的那種組織形態(tài)間的差別，在靈長(zhǎng)動(dòng)物中最為突出。 由此可見(jiàn)靈長(zhǎng)類(lèi)動(dòng)物中適應(yīng)性變化的多樣性。 黑猩猩比狒狒更接近人類(lèi)，或者說(shuō)它與我們心愿的自我形象更為接近：自由自在，不落窠臼，不喜歡任何形式的'約束并且往往魅力十足(在狒狒中魅力比較罕見(jiàn))。 通過(guò)在黑猩猩的自然棲息地森林中對(duì)它們進(jìn)行了 8 個(gè)月的觀察，兩名研究人員得出這樣結(jié)論："我們注意到在黑猩猩的社會(huì)中似乎沒(méi)有任何一種獨(dú)立的社會(huì)基本單位，這一點(diǎn)令我們很吃驚。 它們不僅沒(méi)有’家庭’或’妻妾’組織，也沒(méi)有’團(tuán)隊(duì)’組織，也就是說(shuō)黑猩猩沒(méi)有固定地生活在一起。 相反，每只黑猩猩隨意流動(dòng)，或是獨(dú)自一人，或是作為最好稱(chēng)之為團(tuán)伙的一員。 團(tuán)伙有時(shí)會(huì)與其它團(tuán)伙合并成大的聚合體。 它們可以隨意離開(kāi)同伴，并與其它黑猩猩組成新的團(tuán)伙而不會(huì)產(chǎn)生任何糾紛。"把黑猩猩這一總的特性稱(chēng)之為"來(lái)得容易去得快" 是最恰當(dāng)不過(guò)了。 但它們也有一定的群體傾向性。 通常，黑猩猩群的構(gòu)成有以下4 種：僅有成年雄性； 母猩猩及其子女而且偶爾有幾只其它的雌性猩猩； 雄性和雌性的成年和未成年黑猩猩但不包括有子女的雌性黑猩猩； 以及各種類(lèi)型混雜在一起。一天之中一個(gè)團(tuán)伙的組成可能變化好幾次，因?yàn)橛械某蓡T可能離開(kāi)，而且群體可能會(huì)與其它群體合并。 另一方面，有些黑猩猩有自己喜歡的伙伴。 一名研究人員發(fā)現(xiàn)四只雄性黑猩猩在4 個(gè)月中常常共同游蕩，還有母親們常與她們較年長(zhǎng)的子女們?cè)谝黄稹?/p>
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