Oddly enough, the Harlequin Duck is Saint Paul’s most numerous duck species throughout the tour season. Large flocks, sometimes numbering in the low hundreds can be found daily all around the island’s shores. Especially high concentrations occur from around the town harbor to Southwest Point. As harlequin Ducks breed in fast moving tundra rivers, a habitat sorely lacking on the Pribilofs, it is surprising that there are so many non-breeding birds that over summer so far from their nearest breeding grounds. This gaudy species should not pose any difficult for the visiting birder to identify, but it is worth noting that amongst the throngs of Harlequin Duck there sometimes lurk a few Steller’s Eiders or Black Scoters.