| 1. | It forms a superspecies with the white-bellied sea eagle.
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| 2. | The eastern spinebill forms a superspecies with the closely related western spinebill.
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| 3. | It is part of the violet-backed sunbird superspecies.
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| 4. | It does, although, form a superspecies with the Chilean swallow.
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| 5. | Vocal differences primarily separated the superspecies into four distinct taxa.
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| 6. | The least bittern forms a superspecies with the little bittern and yellow bittern.
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| 7. | More recent results suggest that the common bush tanager is actually a superspecies.
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| 8. | It was formerly included in the superspecies " Diphasiastrum complanatum ".
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| 9. | In this superspecies, the lesser whitethroat seems to form the basal European lineage.
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| 10. | It forms a superspecies with the white-naped and black-headed honeyeaters.
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