Aythya collaris Ring-necked Duck ID: 8235 3181 2553 0102 [detail] Dr. K.T. Rogers © 1999 California Academy of Sciences	Aythya collaris Ring-necked Duck ID: 1111 1111 2222 0255 [detail] © 2003 Joyce Gross	Aythya collaris Pato Pico Anillado ID: 0000 0000 0404 0648 [detail] © 2004 George W. Hartwell	Aythya collaris Ring-necked Duck ID: 1111 1111 2222 0552 [detail] © 2005 Joyce Gross
Aythya collaris Ring-necked Duck ID: 1111 1111 2222 0553 [detail] © 2005 Joyce Gross	Aythya collaris Ring-necked Duck ID: 0000 0000 0107 0131 [detail] © 2007 Ram Vasudev	Aythya collaris Ring-necked Duck ID: 0000 0000 0107 0141 [detail] © 2007 Ram Vasudev	Aythya collaris Ring-necked Duck ID: 0000 0000 0107 1280 [detail] © 2007 John Pelafigue
Aythya collaris Ring-necked Duck ID: 0000 0000 0207 0034 [detail] © 2007 John Blenis	Aythya collaris Ring-necked Duck ID: 0000 0000 0207 0400 [detail] © 2007 Ram Vasudev	Aythya collaris Ring-necked Duck ID: 0000 0000 0715 1673 [detail] © 2015 Christopher L. Christie	Aythya collaris Ring-necked Duck ID: 0000 0000 0715 1671 [detail] © 2015 Christopher L. Christie
Aythya collaris Ring-necked Duck ID: 0000 0000 0715 1672 [detail] © 2015 Christopher L. Christie	Aythya collaris Ring-necked Duck ID: 0000 0000 0715 1670 [detail] © 2015 Christopher L. Christie	Aythya collaris Ring-necked Duck ID: 0000 0000 0715 1669 [detail] © 2015 Christopher L. Christie	Aythya collaris Ring-necked Duck ID: 0000 0000 0715 1666 [detail] © 2015 Christopher L. Christie
Aythya collaris Ring-necked Duck ID: 0000 0000 0715 1667 [detail] © 2015 Christopher L. Christie	Aythya collaris Ring-necked Duck ID: 0000 0000 0715 1668 [detail] © 2015 Christopher L. Christie	Aythya collaris Ring-necked Duck ID: 0000 0000 0507 0596 [detail] © 2007 John Blenis	Aythya collaris Ring-necked Duck ID: 0000 0000 0507 0597 [detail] © 2007 John Blenis
Aythya collaris Ring-necked Duck ID: 0000 0000 0507 0598 [detail] © 2007 John Blenis	Aythya collaris Ring-necked duck ID: 0000 0000 1207 1437 [detail] © 2007 Larry Beckerman	Aythya collaris Ring-necked duck ID: 0000 0000 1207 1438 [detail] © 2007 Larry Beckerman	Aythya collaris Ring-necked Duck ID: 0000 0000 0608 0886 [detail] © 2008 Christopher L. Christie

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