Lesser Scaup have been seen an average of about 5 times per year at the park, and don't appear to show the declines in recent years exhibited by Greater Scaup.  Possibly, Lesser Scaup have been more willing to stay in the slough, rather than the lake, and have thus eluded some of the Bald Eagle predation threat.

Greater Scaup and Lesser Scaup can be notoriously difficult to tell apart, and many times we've had to leave them as Scaup sp. for our identification.  The two species recently seem to be about equally likely to be seen at the park.

Lesser Scaup can be seen on the lake, in the slough, and at the ponds at Marymoor West (aka the Rowing Club).