Waterbird diversity has increased dramatically this week. Significant counts of Red-breasted Merganser, Long-tailed Duck, and Redhead are still the norm, but many other species are beginning to increase in abundance.
Flocks of aythya in the Straits are common, and more diverse during the spring. Groups often contain mixed species, including scaup, Ring-necked Duck, Canvasback, and occasionally dabblers.
With a surplus of open water, a variety of dabbler species are already being observed. American Black Duck, American Wigeon, Northern Pintail, and Wood Duck have made appearances.
Hooded Merganser can be observed migrating in pairs and singles, but sightings of this species are uncommon. As the season progresses, flocks of Common Merganser will become more frequent. Bufflehead have arrived in substantial numbers. The first of many Common Loons for the spring were also sighted this week. Large waterbird movements in the Straits are expected throughout mid-April as the count nears its peak.
Noteworthy sighting this week include a single Tundra Swan, migrating within a flock of Canada Geese. Peregrine Falcons are spotted occasionally on the Mackinac Bridge, potentially nesting. A third Snowy Owl for the count was observed in flight along the lake ice.
