What are the rates?

Ratetes is a family without bird flight, which include, among other things, ostriches, rheas and emus. They have a unique bone structure among birds that are able to fly because they lack the structure that the wing muscles are attached to other birds called hernia. It is discussed when and how they developed, but some form of ratit has existed for at least 50 million years. Today, some species are grown both as a source of meat and for their feathers and skin, but others are at risk.

types

The

Ratita family includes ostriches, emus, Cassowies, Rheas and Kiwis. There are also several extinct rattles, including Moas and Elephant birds. The ostriches are the largest living species and usually grow between 6 and 9 and 3 m) high, weighing about £ 360 (160 kg) and can reach speeds of up to 46 km/h. They come from Africa, but are commercially brought up around the world. Kiwis are at the other end of the spectrum and rarely grow larger than chickens. Several species of kiwi are endangered and are very prone to predators such as KočKy and dogs. They are known to lay the largest eggs in relation to their body size of any bird, with one egg reaching up to 25% of their body weight.

rheas look somewhat like smaller ostriches and live in South America. There are two types of rhea, each of which tends to form flocks with deer, similar to the way they make ostriches with other animals such as zebras. The larger of these two species, the larger Rhea, cost about 3 to 5 feet (0.9 to 1.5 m) high and weighs about £ 50 (20 kg), while the smaller, called Darwin's rhea, costs about 3 ft (about 1 m) high and weighs between £ 33 to £ 55 (15 to 25 kg). Similarly looking bird, emu, lives in Australia and grows to about 6 feet (2 m) tall. They are able to swim and their legs are so strong that they can kick Through metal fences.

Cassowary are also very strong and can release an adult with their kicks. They do not like to make contact with ifDMI, but they become aggressive when they are in the corner. Adults are about 5 to 6 feet tall (1.5 to 1.8 m) and weigh about £ 130 (60 kg). They are able to run at a speed of up to about 30 mph (about 50 km/h) and swim in both rivers and ocean. After ostrich and emus, Cassowar is the third highest birds in the world.

The extinct Rate, the elephant bird Madagascar, was the largest bird in the world at a time when he lived, although it was assumed that around the 17th century disappeared. On average, they were about 10 feet high (over 3 m) and weighed over £ 800 (400 kg), their eggs were approximately 160 times the volume of chicken egg, with a diameter of about 3 feet (1 m). It is assumed that they were at least partially responsible for the ROC legend, a giant bird that presented in Sinbad Sailor's stories. Another extinct type of ratit was Moa, who lived in New Zealand until it disappeared around 1300 NL. There were 11 MOA species that ranged at a height between 3 and 13 feet (about 1 to 4 m) and weighed between £ 30 and £ 520 (14 to 236 kg), depending on the species.

Cultivation

ostriches, emus and rheas are grown commercially for their meat, skin, feathers, eggs and other parts of the body. In particular, EMU is used to produce EMU oil, a nutritional supplement made of their fat. Rheas and ostriches are more often grown for their meat, as well as on the skin and feathers that are used to produce leather goods and clothing decoration. In most areas, including the USA, EU and Australia, there are regulations concerning rattit agriculture, including the type and height of the fencing needed to maintain and clean the slaughter. The US Ministry of Agriculture (USDA) recommends cooking ostrich, like beef and Sure production, that it will reach an internal temperature of 145 ° F (about 63 ° C) or 160 ° F (about 71 °) if it is the ground.

similar birds

The closest relatives of the rate are tinamic who live in Central and South America. Especially closely related to RHEAS, both in terms of body structure and in terms of DNA. Most species are relatively small and the largest tinAmou weighs about £ 5 (2.3 kg) and the smallest weighs only 1.5 oz (43 g). Even if they can fly a little, they walk or run if they are not very endangered. Unlike the shoulders, their muscles are adapted for flying, but their circulatory systems cannot work properly for long years.