Aves migratorias

The video explains how migratory birds travel thousands of kilometers between snowy and sunny regions during winter and summer. These migrations are guided by the Earth's magnetic field, which birds can detect and possibly see. The magnetic field is strongest near the poles and weakest away from them, helping birds navigate. By understanding the field's strength, birds can determine their migration routes, moving to warmer areas in winter and cooler ones in summer.

Describe how birds might perceive the Earth's magnetic field visually.

Explain how migratory birds use the strength of the Earth's magnetic field to navigate between colder and warmer regions.