Bird Migration - Bài tập đọc hiểu 🕊️ Bird Migration Bài tập đọc hiểu tương tác • True/False/Not Given + Matching • Nộp bài • Xem giải thích chi tiết Bạn có thể làm bài, nộp và xem đáp án + giải thích ngay lập tức 📖 Reading Passage Paragraph 1 Migration is the regular movement of animals between their breeding grounds and the areas that they inhabit during the rest of the year. Many types of animals migrate, but bird migration in particular has fascinated observers for centuries. Migration is an excellent example of how nature has responded to the biological imperative for species to evolve and spread out into all possible ecological niches that can provide the conditions necessary for species to breed and raise young. Paragraph 2 The most common form of bird migration involves traveling to higher latitudes to breed during the warm season and then returning to lower latitudes during the nonbreeding period. This form of migration allows birds to breed in areas that provide optimal conditions for nesting and feeding their young. Because of the way in which the continents are situated upon Earth, migration of this type takes place primarily into the higher latitudes of the Northern Hemisphere. No land birds are known to migrate into the higher latitudes of the Southern Hemisphere; only species of seabirds migrate to the Southern Hemisphere to breed. Paragraph 3 Although most bird migration takes place between the lower and higher latitudes of the Northern Hemisphere, many species are trans-equatorial, living in the Northern Hemisphere during the breeding season and in the Southern Hemisphere during the remainder of the year. A well-known example of transequatorial migration is the arctic tern. This tern, which breeds in the arctic regions and winters in antarctic waters, travels 24,000 miles a year during migration. Paragraph 4 Not all migration is long distance. Some species exhibit altitudinal migration. Their breeding areas are in higher elevations, near or at the peaks of mountains, and they spend the nonbreeding season in neighboring valleys or other nearby low country. This variety of migration is typical of many grouse species, including the ptarmigan, a type of arctic grouse. Many rock ptarmigan never leave the high arctic tundra, spending their breedin...