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. 62nd suppl.) |
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Aechmophorus [occidentalis or clarkii] | Aechmophorus occidentalis Western Grebe |
Aechmophorus occidentalis Western Grebe |
Aechmophorus occidentalis Western Grebe |
Aechmophorus occidentalis Western Grebe |
Aechmophorus occidentalis Western Grebe |
Aechmophorus occidentalis Western Grebe |
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* Aechmophorus occidentalis | |
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Aechmophorus occidentalis Western Grebe |
Aechmophorus occidentalis Western Grebe |
Aechmophorus occidentalis occidentalis | |
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Aechmophorus occidentalis ephemeralis | |
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* Aechmophorus clarkii← | |
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Aechmophorus clarkii Clark's Grebe |
Aechmophorus clarkii Clark's Grebe |
Aechmophorus clarkii clarkii | |
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Aechmophorus clarkii transitionalis | |
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