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

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

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

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

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

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

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