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What are Migratory Birds? Video Lecture | Class 7 Oxford Science: Chapter Notes, Worksheets & Tests
FAQs on What are Migratory Birds? Video Lecture - Class 7 Oxford Science: Chapter Notes, Worksheets & Tests
| 1. What are migratory birds? |  |
Ans. Migratory birds are a group of birds that travel long distances from one region to another during specific seasons. They undertake these journeys to find better feeding, breeding, or nesting grounds, often due to changes in weather or availability of resources.
| 2. Why do migratory birds migrate? | |
Ans. Migratory birds migrate for various reasons. Some common reasons include the search for better food sources, favorable breeding grounds, or suitable climates. They often follow the availability of resources, such as insects, fruits, or fish, which may vary in different regions during different seasons.
| 3. How do migratory birds find their way? | |
Ans. Migratory birds navigate their long-distance journeys using various methods. They rely on a combination of celestial cues, such as the position of the sun and stars, landmarks, magnetic fields, and innate instincts. Scientists believe that migratory birds possess a built-in compass and a mental map that helps them navigate accurately.
| 4. How far do migratory birds travel? | |
Ans. The distance migratory birds travel varies depending on the species. Some birds may travel a few hundred miles, while others undertake journeys of several thousand miles. For example, the Arctic Tern holds the record for the longest migration, traveling from the Arctic to the Antarctic and back, covering a distance of about 44,000 miles.
| 5. Are all birds migratory? | |
Ans. No, not all birds are migratory. While some bird species migrate regularly, many others are resident birds that stay in the same region throughout the year. The decision to migrate or not depends on factors such as the bird species, availability of resources, and environmental conditions.
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