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hazel grouse (Bonasa bonasia, Tetrastes bonasia, Tetrastes bonasia rupestris); hazel hen (Bonasa bonasia, Tetrastes bonasia, Tetrastes bonasia rupestris); hazel-grouse (Bonasa bonasia, Tetrastes bonasia, Tetrastes bonasia rupestris); hazel-hen (Bonasa bonasia, Tetrastes bonasia, Tetrastes bonasia rupestris) | |||
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hazel grouse (Bonasa bonasia, Tetrastes bonasia); hazelhen (Bonasa bonasia, Tetrastes bonasia); common hazelhen (Bonasa bonasia, Tetrastes bonasia) | |||
hazel grouse (Bonasa bonasia) |