Bird Calls

A call...

• has one note

• is short and simple

• impresses female birds

• is long and complicated

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Birds use songs and calls to...

• warn each other about predators

• clear their throat

• beg for food

• wake up people

• defend their territory

Long and complicated songs impress female birds

• because they show the male bird is strong and healthy

• because female birds like music

• because they show the male has a good memory

• because they show the male birds are smart

Tags

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In order to defend their territories hummingbirds sing and

Tags

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Baby birds

• compete with their siblings for food

• only eat in the morning

• can fly

• call loudly when they're hungry

Tags

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Researchers in ____________________ discovered that chicks can change their calls according to how hungry they are.

• Kazahstan

• Kuwait

• Korea

• Kenya