鸵鸟是鸡的变种?

鸵鸟

学名：Struthio camelus

英文名：Ostriches

分布于非洲和***半岛的部分地区。产于非洲，又叫“非洲鸵鸟”。

鸵鸟(又名非洲鸵鸟)是现代鸟类中最大者，雄鸟高约2.75米。它们生活在沙漠草原地带。群居，日行性。嗅听觉灵敏，善奔跑，跑时以翅扇动相助，一步可跨8米，时速可达70千米/小时，能跳跃达3.5米。以植物的颈、叶、种子、果实及昆虫、蠕虫、小型鸟类和爬行动物等为食。

繁殖期旱季，有求偶争斗，雄性具求偶炫耀，雌性以沙地掘浅坑为巢，每产10—13卵，孵化期约42天，约3岁性成熟，寿命约60年。北京动物园1954年开始饲养展出，1985年繁殖成功。

被列入濒危野生动植物种国际贸易公约

鸵形目鸵鸟科

本目驼形目仅1科——鸵鸟科，1种——鸵鸟。体重可达135千克，体高近3米。两翼退化，不能飞翔，后肢粗壮有力，足仅2趾(第3、4趾)，适于奔走。胸骨不具龙骨突，无尾综骨和尾脂腺。雄鸟具交配器。

孵化

有时几只雌性鸵鸟的卵产在一起，孵化时雄性夜间，雌性白天轮流值班。卵很大，一枚重0.5～1千克。一般是40～50只鸵鸟汇聚成一群活动。它们还常用沙土和砾石将蛋覆盖，以保持一定温度。在孵化末期，亲鸟会将一些蛋推滚到窝边缘，有利于同步孵化。孵化出的雏鸟很快就能随亲鸟四处游荡。

怎么用英语描述鸵鸟一片段三年级下？

英语描述鸵鸟The ostrich is the largest and heaviest bird.It is also the fastest-running bird; it can run up to 43 mph (70 kph).It can outrun most predators,but can also kick to protect itself.Ostriches cannot fly.They have a life span of up to 40 years in captivity.

Anatomy:The ostrich can grow up to 9 feet (2.7 m) tall and weighs up to 345 pounds (156 kg).The ostrich also has the biggest eyeballs of any bird; they are 2 inches (5 cm) across.

Eggs:The ostrich lays the biggest egg in the world; ostrich eggs are 4.5 x 7 inches (11 x 18 cm) across and weigh 3 pounds (1400 g).

Habitat:This bird is native to the dry savannas of Africa and are well adapted to desert life.Ostriches get water from the plants they eat.

Diet:Ostriches eat mostly plants,but also eat insects,fruits,seeds,nuts,and some **all animals (like lizards).

关于用英文介绍鸵鸟的

The ostrich is the largest and heaviest bird. It is also the fastest-running bird; it can run up to 43 mph (70 kph). It can outrun most predators, but can also kick to protect itself. Ostriches cannot fly. They have a life span of up to 40 years in captivity.

Anatomy: The ostrich can grow up to 9 feet (2.7 m) tall and weighs up to 345 pounds (156 kg). The ostrich also has the biggest eyeballs of any bird; they are 2 inches (5 cm) across.

Eggs: The ostrich lays the biggest egg in the world; ostrich eggs are 4.5 x 7 inches (11 x 18 cm) across and weigh 3 pounds (1400 g).

Habitat: This bird is native to the dry savannas of Africa and are well adapted to desert life. Ostriches get water from the plants they eat.

Diet: Ostriches eat mostly plants, but also eat insects, fruits, seeds, nuts, and some **all animals (like lizards).