Species concept | American Ornithologists' Union 1st edition (1886) | American Ornithologists' Union 2nd edition (1895) | American Ornithologists' Union 3rd edition (1910) | American Ornithologists' Union 4th edition (1931) | American Ornithologists' Union 5th edition (1957) | American Ornithologists' Union 6th edition (1983) | American Ornithologists' Union 7th edition (1998) | American Ornithologists' Society 7th edition (incl. 63rd suppl.) |
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Ardea [cinerea or monicae]← | Ardea cinerea European Blue Heron |
Ardea cinerea European Blue Heron |
Ardea cinerea European Heron |
Ardea cinerea European Heron |
Ardea cinerea Gray Heron |
Ardea cinerea Gray Heron |
Ardea cinerea Gray Heron |
Ardea cinerea Gray Heron |
* Ardea cinerea | |
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Ardea cinerea [cinerea or jouyi] | |
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Ardea cinerea cinerea | |
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Ardea cinerea cinerea |
Ardea cinerea cinerea |
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[Ardea cinerea (rectirostris)] | |
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Ardea cinerea jouyi | |
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Ardea cinerea firasa | |
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* Ardea monicae | |
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