Ring-necked Duck (Aythya collaris)Ring-necked Duck (Aythya collaris)Ring-necked Duck (Aythya collaris)Ring-necked Duck (Aythya collaris) femaleRing-necked Duck (Aythya collaris)Ring-necked Duck (Aythya collaris)Ring-necked Duck (Aythya collaris)Ring-necked Duck (Aythya collaris) femaleRing-necked Duck (Aythya collaris)Ring-necked Duck (Aythya collaris)Ring-necked Duck (Aythya collaris)Ring-necked Duck (Aythya collaris) female