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第零章 鸡鸭鹅的祖宗 下(2 / 2)

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不过与鸭子的祖先是甲鸟不同,家鹅的祖先是雁,如果单从鹅的名字来说,不知道的还以为更像是天鹅驯化来的。

鸭子的叫声沙哑、短促,“嘎嘎嘎……”。

而鹅的叫声“歌——”,声脆而尾音长,就像唱歌。其实“鸭”的叫声就是它名字的叫声“甲甲甲”,而“鹅”同样如此,“我我我”,而英文的goose,发音也类似。

“夏,我找到一只鸟,在那边,很可能是鹅……”一位战士兴高采烈的跑过来说道。

“哦,真的吗?长长的脖子、雪白的身子……”李陵闻言一边询问道,一边跟着这位战士兴冲冲的跑过去看。

很快李陵以及身后一小群人好奇心爆棚的原始人,到了地方。

“夏,快看,那里!”那位战士指引着方向。

众人循着手势看去,发现传说中的“鹅”:

体型较大,体长一两米以上,身高也很高,直立时高可达两三米,比原始人还高。除颈部和飞羽后端为黑色外,全身洁白,头顶皮肤裸露,呈鲜红色。

“咳,这是充气版的丹顶鹤吧?”李陵看着傻眼说道。

这哪里是鹅啊,这明明是鹤啊!

丹顶鹤是中国最着名的鸟类之一,红红的头部,自古以来深受人们喜爱,很早就被人们所饲养,唐宋年间尤为盛行,它更是一种长寿鸟,寿命可长达50-60年。

李陵眼前的丹顶鹤具备鹤类的特征,即三长——嘴长、颈长、腿长。韩国长腿欧巴见了也会自惭形秽。

这位夏部落的战士所指的方向,正是一片沼泽或浅水地带,正是鹤喜欢栖息的地方,因此它常被人冠以“湿地之神”的美称。

丹顶鹤与鸡鸭一样也是杂食性,春季以草籽及作物种子为食,夏季食物较杂,动物性食物较多,主要动物性食物有小型鱼类、甲壳类、螺类、昆虫及其幼虫等,也食蛙类和小型鼠类,植物型食物有芦苇的嫩芽和野草种子等。

而且丹顶鹤属于单配制鸟,即一夫一妻制,若无特殊情况可维持一生。

“这不是鹅,这是鹤,而且是丹顶鹤,不过也是非常好的!你们也去把它们逮回来吧,小心点!”李陵哭笑不得地说道。

也难怪原始人傻傻分不清,没见过鹅,乍一见到鹤,还真有可能错认。

实际上鹅头大,喙扁阔,前额有肉瘤,它的嘴根部与头呈九十度角,这是最明显的特征,而鹤嘴长、尖细。

鹅与鹤最相似的莫过于:脖子都很长,身体雪白。

但鹅腿短,而鹤腿很长,这是最显着的差异。远远一看,“亭亭玉立”,那就是鹤了,李陵眼前的鹤群中,就是睡觉的鹤也单立着腿,“金鸡独立”一般。

还有鹅脚大有蹼,可以划水,而鹤没有所以它们不爱游泳,而是生活在浅水或沼泽地带,用长长的腿站立其中觅食。

最后鹅的尾短,而鹤有长长的黑尾翎垂落。

李陵想到了曾经看到过的知识:“鹅起源于鸿雁!”

它们食青草,耐寒、耐粗饲,觅食力强、有较强合群性及抗病力强,而且生长快,胸脯丰满,可以成为肉食家禽首选品种。

鸿雁的背部羽毛以暗灰褐色为主,颈的后部中央为棕褐色,其余为白色。总体来看,如同有一条大辫子披在头部的后面,胸部和腹部由肉桂色逐渐转为白色,它的嘴甲为黑褐色。

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