A) The process of birds changing their appearance.
B) The behavior of birds eating specific diets.
C) The process of birds building nests.
D) The seasonal movement of birds from one place to another.

A) To refuel and rest during their long journeys.
B) To find new mates.
C) To establish territories.
D) To hide from predators.

A) Arctic Tern
B) Ostrich
C) Penguin
D) Hummingbird

A) Magnetoreception
B) Thermoreception
C) Electroception
D) Echolocation

A) Antarctica
B) Asia
C) Europe
D) North America

A) Loud noises in the environment.
B) Global migration alert system.
C) Changes in daylight length and temperature.
D) Email reminders.

A) Keep cats indoors, reduce pesticide use, and avoid disrupting their habitats.
B) Plant more trees everywhere.
C) Offer them snacks during their journey.
D) Scare them away for fun.

A) To encourage birds to find new routes.
B) To reduce bird populations.
C) To make migration easier for birds.
D) To ensure the survival of bird populations and maintain ecosystem balance.