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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* Egretta thula← | Ardea candidissima Snowy Heron |
Ardea candidissima Snowy Heron |
Egretta candidissima Snowy Egret |
Egretta thula Snowy Egret |
Leucophoyx thula Snowy Egret |
Egretta thula Snowy Egret |
Egretta thula Snowy Egret |
Egretta thula Snowy Egret |
Egretta thula thula | |
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Egretta candidissima candidissima |
Egretta thula thula |
Leucophoyx thula thula |
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Egretta thula brewsteri | |
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Egretta candidissima brewsteri |
Egretta thula brewsteri |
Leucophoyx thula brewsteri |
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