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interchangability: all members of bird species can theoretically send and receive messages.

arbitrariness: bird calls don't usually have inherent links to what it trying to be communicated.

tradition/cultural transmission: some aspects of bird communication must be learned through socialization between members of the species.

reflexiveness: birds don't contemplate their communication.

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chimps learn to use computer or sign language

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Multiple dialects

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Dog whining when it cannot be let into the house

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distinct calls that mean different things

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Communication focused on survival: food, reproduction etc.

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Primates can both send and receive messages

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refer to things that are far away

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Only male birds sing

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distinct and arbitrary calls that refer to specific predators

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certain monkeys planned for future events using snake and leapard signals

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Not clear that birds can use this feature

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different songs are learned

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It's possible for some primates to learn basic sign language

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Only male birds sing so not a feature