Объяснение:
1) Hummingbirds are amazing little birds. There are many types of them, but they all differ in their modest size and amazing beauty. Hummingbirds are not found in Russia, but you can see them with your own eyes in zoos and ornitariums.More than 350 species are known to live in America from Alaska and Labrador to Tierra del Fuego. Widely distributed in tropical forests, especially in the middle mountains. The size of the hummingbird does not exceed 5 cm, and the weight of the hummingbird is 1.6-1.8 grams.
2) Due to the fact that hummingbirds feed on flower nectar, it turns out that they pollinate flowers. However, hummingbird food is not only flower nectar. In addition to him, these birds also eat small insects and at the same time feed exclusively on the fly.Praying mantises hunt hummingbirds. Praying mantises catch them with their "favorite" method: from an ambush. (They watched the moment when the victim approached them by 5-10 centimeters, grabbed it with their front legs and, holding it, began to eat. Most often, predators bit birds in the head or neck, sometimes they made a hole in the head to get to the brain or ate eyes)
3) hummingbird is the only bird that can fly backwards or upside down; Libri can fly at speeds up to 70-80 kilometers per hour; Hummingbirds have a huge, by their standards, heart - it is three times the size of the stomach, and takes up more than a third of the volume of their entire body; The hummingbird flaps its wings up to 80 per second. I like this bird because it is very interesting because of its abilities.
1) A small bird that can sing better than any other. It usually sings at night, but it can sing in daytime too.
2) It is easy to teach these birds that live in South Africa, Australia and South America some words that people use.
3) A bird larger than a sparrow but smaller than a crow. It is usually grey or dark-blue and grey, sometimes white or brown. Often lives in cities.
4) A large black and white bird that lives near the sea and has a loud voice.
5) A bird which is black-and-white and which often takes to its nest small bright things.
6) A small brown singing bird that lives in the field, has its nest in the grass and usually sings early in the morning.
7) A bird with a long narrow beak which can make holes2 in trees.
8) A large beautiful white or sometimes black bird bigger than a duck, with a long neck that lives on rivers and lakes.
9) A night bird with large eyes that eats mice and other small animals.
"+" — Had + been + перша форма неправильних дієслів + ing (закінчення)
"-" — Had not + been + перша форма неправильних дієслів + ing (закінчення)
Пример:
"+" – He had been watching TV for 2 hours.
"-" – She had been dancing for 1 hour.