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One gray bird and one black bird, each with smaller beaks

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One black bird and one gray bird, each with medium sized beaks

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One gray bird and one gray bird with a black head, each with larger beaks

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One gray bird and one gray bird with a black head, both with smaller beaks. Tree dwellers

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One gray bird and one black bird with larger beaks

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One gray bird and one black bird, each with a smaller beak

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Two gray birds with smaller beaks, tree dweller

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One gray bird and one black bird with larger beaks. Tree dwellers

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One gray bird and one black bird with smaller beaks

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Two gray birds with smaller beaks. Tree dwellers

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One gray bird and one gray bird with a black head with smaller beaks. Tree dwellers

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One bird is black, and the other is gray. They both have larger beaks

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Two lighter colored birds with smaller beaks. Tree dwellers