Migratory birds

Migratory birds travel vast distances between seasons, guided by Earth's magnetic field. This field, stronger near the poles, helps birds navigate by detecting its strength and direction. Scientists believe birds might visually perceive the magnetic field, aiding their migration. By understanding these magnetic cues, birds can efficiently travel to warmer regions in winter and cooler areas in summer.

What is the term used to describe the long journeys that birds take between their winter and summer habitats?

• Migration

• Hibernation

• Navigation

• Exploration

How does Earth's magnetic field vary in strength?

• It is uniform across the planet.

• It is stronger over oceans and weaker over land.

• It is stronger near the equator and weaker at the poles.

• It is stronger near the poles and weaker further from the poles.

What do scientists believe about birds' ability to detect Earth's magnetic field?

• Birds can taste the magnetic field.

• Birds can hear the magnetic field.

• Birds can smell the magnetic field.

• Birds can see the magnetic field.

Why do birds fly towards a weaker part of Earth's magnetic field in winter?

• To find mates

• To find more food

• To escape predators

• To avoid cold polar regions

What might birds perceive when they see Earth's magnetic field?

• A change in altitude

• A shift in wind direction

• A change in temperature

• An area of extra brightness