ratite

简明释义

英[ˈrætaɪt]美[ˈrætaɪt]

adj. 走鸟类的；平胸类的

n. 平胸类鸟

英英释义

单词用法

同义词

反义词

例句

1.South American game bird resembling a gallinaceous bird but related to the ratite birds.

南美体重翼小的猎鸟，形似鹌鹑但与平胸鸟有亲缘。

2.South American game bird resembling a gallinaceous bird but related to the ratite birds.

南美体重翼小的猎鸟，形似鹌鹑但与平胸鸟有亲缘。

3.The ratite species, such as ostriches and emus, are known for their flightless nature.

像鸵鸟和鸸鹋这样的ratite物种以其不会飞的特性而闻名。

4.Many farmers are now raising ratite birds for their meat and feathers.

许多农民现在饲养ratite鸟类以获取肉和羽毛。

5.The largest living bird is the common ostrich, a type of ratite.

最大的现存鸟类是普通鸵鸟，一种ratite。

6.The evolution of ratite birds offers insight into how species adapt to their environments.

对ratite鸟类的进化研究提供了物种如何适应环境的见解。

7.In New Zealand, the kiwi is a unique ratite that plays a significant role in the ecosystem.

在新西兰，奇异鸟是一种独特的ratite，在生态系统中扮演着重要角色。

作文

The term ratite refers to a group of flightless birds that are characterized by their flat breastbones and lack of a keel, which is the structure that allows other birds to fly. This unique anatomical feature is one of the defining characteristics of ratites, setting them apart from their flying relatives. The most well-known members of this group include the ostrich, emu, kiwi, cassowary, and rhea. Each of these birds has adapted to their environments in fascinating ways, showcasing the incredible diversity of avian life on our planet.One of the most striking features of ratites is their size. The ostrich, for example, is the largest living bird, capable of reaching heights of up to nine feet and weighing as much as 300 pounds. Despite its inability to fly, the ostrich is an exceptional runner, able to reach speeds of up to 45 miles per hour. This adaptation is essential for survival in the African savanna, where they rely on their speed to escape predators.In contrast, the kiwi, native to New Zealand, is a small, nocturnal ratite that has evolved to thrive in a completely different environment. Kiwis are about the size of a domestic chicken and are known for their long beaks and sensitive nostrils, which they use to forage for insects and worms in the ground. Unlike their larger counterparts, kiwis are not built for speed; instead, they rely on their camouflage and nocturnal habits to avoid detection by predators.Another fascinating aspect of ratites is their reproductive behavior. Most species exhibit unique nesting and parenting strategies. For instance, the cassowary, a large bird found in the tropical rainforests of New Guinea and Australia, is known for its striking blue skin and helmet-like casque. The male cassowary takes on the responsibility of incubating the eggs and raising the chicks, showcasing a rare example of paternal care in the bird world.The evolutionary history of ratites is also intriguing. It is believed that these birds share a common ancestor that lived millions of years ago. As continents drifted apart, populations of these ancestral birds became isolated, leading to the diverse range of ratite species we see today. The flightlessness of these birds is thought to be a result of adaptive radiation, where species evolve different traits to better suit their environments.Despite their adaptations, many ratite species are currently threatened due to habitat loss, hunting, and introduced predators. Conservation efforts are crucial to ensure the survival of these remarkable birds. Organizations worldwide are working to protect their habitats and educate the public about the importance of preserving these unique species.In conclusion, the study of ratites offers valuable insights into evolution, adaptation, and conservation. These flightless birds remind us of the incredible diversity of life on Earth and the need to protect it. By understanding their unique characteristics and the challenges they face, we can work towards ensuring that future generations will continue to marvel at these extraordinary creatures.

“ratite”一词指的是一组不会飞的鸟类，这些鸟类的特点是其扁平的胸骨和缺乏喙的结构，而喙是其他鸟类能够飞翔的结构。这种独特的解剖特征是ratite的定义特征之一，使它们与会飞的亲属区分开来。这个群体中最著名的成员包括鸵鸟、鸸鹋、猕猴桃、食火鸡和南美驼鸟。这些鸟类每一种都以迷人的方式适应了它们的环境，展示了我们星球上鸟类生命的惊人多样性。ratite最引人注目的特征之一是它们的大小。例如，鸵鸟是最大的现存鸟类，能够达到九英尺的高度，体重可达300磅。尽管不能飞，但鸵鸟是一种出色的奔跑者，能够达到每小时45英里的速度。这种适应对于生存于非洲草原至关重要，因为它们依靠速度逃避捕食者。相比之下，猕猴桃是新西兰特有的小型夜行性ratite，已进化为在完全不同的环境中生存。猕猴桃大约有家禽的大小，以其长喙和敏感的鼻孔而闻名，它们用这些器官在地面上觅食昆虫和蠕虫。与较大的亲属不同，猕猴桃并不适合快速移动；相反，它们依靠伪装和夜间活动来避免被捕食者发现。另一个有趣的ratite方面是它们的繁殖行为。大多数物种表现出独特的筑巢和育雏策略。例如，食火鸡是一种生活在新几内亚和澳大利亚热带雨林中的大型鸟类，以其引人注目的蓝色皮肤和头盔状的角质突起而闻名。雄性食火鸡负责孵化蛋和抚养小鸟，展示了鸟类世界中父爱的一种罕见例子。ratite的进化历史同样引人入胜。据信，这些鸟类共享一个生活在数百万年前的共同祖先。随着大陆的漂移，这些祖先鸟类的种群变得隔离，从而导致我们今天看到的ratite物种的多样性。这些鸟类的不会飞被认为是适应辐射的结果，即物种为了更好地适应环境而进化出不同的特征。尽管有这些适应性，许多ratite物种目前由于栖息地丧失、狩猎和引入捕食者而受到威胁。保护工作对于确保这些非凡鸟类的生存至关重要。全球各地的组织正在努力保护它们的栖息地，并教育公众关于保护这些独特物种的重要性。总之，对ratite的研究提供了有关进化、适应和保护的宝贵见解。这些不会飞的鸟类提醒我们地球生命的惊人多样性以及保护它的必要性。通过了解它们的独特特征和面临的挑战，我们可以努力确保未来的世代能够继续惊叹于这些非凡的生物。