Lesser scaup that looks strongly curved or even angular due to the small crest. When the birds raise their heads, these differences are most easy to spot, and after observing the two species in direct comparison it usually becomes easy to recognize. In fact, in alternate plumage the lesser scaup drake may appear identical in shape and size to a drake of the ring-necked duck ("A. collaris"); the black back and wings of that species are hard to confuse with the light ones of the lesser scaup male though. Particularly in the case of vagrant birds in Europe, the identification is complicated
Prince Edward Point Bird Observatory include fringed gentian, viper's bugloss, butterfly weed, jewelweed, black-eyed susan and small yellow lady's slipper. Rare vascular plants found on Prince Edward Point include Ontario aster, downy wood mint and clammyweed. Prince Edward Point is a concentration point of bird migrations over the Great Lakes. Over 300 species of birds have been recorded at Prince Edward Point. Most of these birds are recorded in migration, however 74 species of bird have been recorded nesting on the point. The site experiences large quantity bird migration. Single-day totals of greater scaup, oldsquaw, and white-winged scoters have exceeded 1% of their total North