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

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

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

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

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

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

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

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