White-winged Scoter

February 16, 2019 – Considered a sea duck, White-winged Scoters are observed in numbers primarily along the coastal areas of the US and Canada. They winter along the coastlines from Baja California to the Aleutian Islands in the North Pacific and along the coastal areas of the south and eastern US from the Gulf of Mexico north to the Canadian Maritimes. According to The Cornell Lab of Ornithology online resource, All About Birds, “Although the White-winged Scoter winters primarily along the coasts, small numbers winter on the eastern Great Lakes.”

A solitary bird or just a few are often recorded inland on ice free open areas of lakes and rivers during late winter in Illinois. Higher numbers of scoters will be found across the area of the Great Lakes north into Canada on the migratory staging areas of late winter and early spring as they push towards those summer nesting grounds in the central Canadian provinces, Northwest Territories, and north into central and northern Alaska.

Over the years Jed Hertz has recorded a number of White-winged Scoters on the Kankakee river. This year is no exception. On January 2nd , below the dam near Jeffers park, Hertz spotted a single White-winged Scoter. On Monday February 11th Jed again found a duck that could actually be the same scoter on the river east of Aroma Park. Photos allow for a closer look of the scoter and it appears to be an immature drake. Jed notified me and I was able to get a few shots of the duck as it worked on an aquatic plant stem, biting and chewing it between its’ thick bill, possibly trying to remove a larvae from the hollow parts of the segmented stem.

White-winged Scoters are a diving duck that feed mainly on mollusks. In wintering areas, crustaceans are an import food source. Scoters have a unique ability to use their wings and feet to propel quickly to the bottom. I observed this behavior from my vantage while watching three scoters feeding near 4th avenue in Kankakee in January of 2014. When they began their head first dive their wings became partially opened and used as if in flight as they disappeared into the depths. A science journal article called “Costs of diving by wing and foot propulsion in a sea duck, the white-winged scoter”, states that, “Most birds swim underwater by either feet alone or wings alone, but some sea ducks often use both.”, perhaps an adaptation required for deep water dives. ”Scoters using wings + feet had 13% shorter descent duration, 18% faster descent speed, 31% fewer strokes/m, and 59% longer bottom duration than with feet only.” J Comp Physiol B. 2008 Mar;178(3):321-32. Epub 2007 Dec 7.

Tundra Swan

February 5, 2019 – Last weeks little bit of open water on the river at Cobb park was a gathering place for a few hundred Canada geese. A number of ducks, both divers and dabblers, swam, rested, and hunted the open water between the ice while at times disappearing into those dark cold winter pools of the Kankakee river only to reemerge a short time later with their catch. A single Tundra Swan, larger than the Canada geese that surrounded it, stood-out with its’ bright white feathers and elegant presence. The Tundra Swan is a visitor seen during the winter months or during migration on the open waters of large lakes, rivers, and in grain fields in the northern parts of the US. During the nesting season the Tundra Swan, sometimes called the Whistling Swan because of the sounds emitted from their wingbeats as they fly, are on their breeding grounds in the remote wetlands of the high Arctic. There are only two native species of swans in North America, the Tundra and the Trumpeter. The Trumpeter swan is slightly larger than the Tundra and for the observer it sometimes requires a close look to determine which species you are looking at.

Winter Waterfowl

February 5, 2019 – The cold weather has brought the winter waterfowl to the open icy waters of the Kankakee river. Common Goldeneye, Common Mergansers, Redheads, Canvasback ducks and more can be seen feeding and resting below the dam near Jeffers park in Kankakee. Jed Hertz spotted a White-winged Scoter this past Saturday, the Scoter is a rare visitor that is usually seen during the winter months on the Great lakes and the coastal areas of the United States and Canada. In one photo a male Canvasback duck is swimming with two male Redheads, look close, they are very similar species. The other photo shows a male Canvasback and a female that appears to be sleeping, don’t let her fool you, she is quite alert as she floats along the icy shore of the Kankakee river.

The Common Goldeneye ducks fly up river towards the dam and land near the Washington Street bridge where they begin diving for crayfish as the current takes them back down river, a process that is repeated over-and-over again. The Common Mergansers do the same thing, catching small catfish, bass and shad. Ring-billed and Herring gulls swoop in to steal the prey from the ducks as soon as they surface with their catch. Mallard ducks, Greater Scaup, Lesser Scaup and the American Black duck can also be seen down river from the dam.