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蜗鸢

大小無變化, 4 年前

→‎亚种分化

| '''1''' ||         蜗鸢美国亚种 ||         Rostrhamussociabilislevis ||         Friedmann, 1933

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| '''2''' || [        [[蜗鸢墨西哥亚种]] ||         Rostrhamus sociabilis major ||         Nelson & Goldman, 1933

|-

| '''3''' ||         [[蜗鸢沼泽亚种]] ||         Rostrhamus sociabilis plumbeus ||         Ridgway, 1874

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