Turkey Vulture. Photo courtesy of Tamima Itani. (click to see the larger version)
It’s axiomatic among Chicago lakefront birders that southwest winds in spring produce lots of migrants. Today, March 8, reaffirmed that maxim. I ended up with 42 species in a couple of hours of birding, including a number of new birds for the year. Large numbers of blackbirds and Canada Geese were moving on the south winds, and we had a number of unusual sightings. Best for the morning were
The Brant that delighted birders in January at Montrose made its way to Lafayette, Indiana in February. Unfortunately, the bird was struck and killed by a car on February 14. The specimen will go to the Purdue University ornithology collection.
White-winged Scoters, Red-breasted Mergansers, and Greater Scaup. March 2014. (click to see the larger version)
Lake Michigan is a huge body of water. At 300 miles long and almost 120 miles at its widest, it’s rightly considered an inland sea as much as a large lake. In winter, Lake Michigan supports tens if not hundreds of thousands of waterfowl. Most are Common and Red-breasted Mergansers, Common Goldeneye, Long-tailed Ducks, and Greater Scaup. Any open area of water on the Lake will host at least a few of these species in winter. These birds depend on the Lake for food. As long as they have access to open water they can hunt for fish, crustaceans, and mollusks and survive the worst that winter has to offer. They’re all resilient birds. Lake Michigan has never completely frozen over, but it’s come close. The winter of 2013/2014 was especially cold and saw a 93% peak ice coverage in early March. The stress this puts on the birds that depend on having open water is enormous. Some don’t make it. I remember the winter of 2013/2014. In early March, Lake Michigan was frozen to the horizon at Montrose Point in Chicago, with a tiny open spot off the southeast point. In this open spot were a group of Greater Scaup, White-winged Scoters, and Red-breasted Mergansers, all desperate and trying frantically to survive. The only thing keeping the water from freezing was their paddling and movement. I found several dead ducks, some frozen on the ice, and a few even on land. This is a reminder of how harsh nature can be, and what happens when a resource becomes unavailable to large numbers of birds.
Red-breasted and Common Mergansers and Herring Gulls. February 2021. (click to see the larger version)
As I write this post in mid-February 2021, Chicago is experiencing a stretch of unseasonably cold late winter weather. Most of Lake Michigan at Montrose is frozen to the horizon, with small areas of open water at the harbor mouth and off the fishing pier. From a birding point of view, checking these open areas is worthwhile since they tend to attract and concentrate ducks and gulls. In addition to the expected Common and Red-breasted Mergansers and Common Goldeneye, we’ve seen Long-tailed Duck and Black Scoter. According to NOAA, Lake Michigan has about 27% ice coverage, a far cry from 93% in 2014. If the unseasonably cold weather persists, the 27% will no doubt increase.
I walked over to Montrose on February 10, the first time I’ve been there since the polar air and bitter temps set in a week ago. Not surprisingly, Lake Michigan was mostly frozen, though an area of open water extended from the harbor mouth and along the shore up to the fishing pier. Hundreds of waterfowl and gulls were here, mostly Red-breasted and Common Mergansers, Common Goldeneye, and Herring Gulls. Best were a female type Black Scoter, a female Long-tailed Duck, seven Iceland Gulls, and a first cycle Lesser Black-backed Gull. A frozen Lake Michigan concentrates waterfowl in the remaining open water; these conditions are great for birding but admittedly hard on the birds. More photos are at my eBird checklist for the morning, URL below.
Long-tailed Duck with a fish (click to see the larger version)
A very tame female Long-tailed Duck showed up in the harbor on February 1. She was still there on February 2. The bird has a pale spot on the bill, a mark I associate with male Long-tailed Ducks, but I think the head is too dark for a young male and the scapulars are brown, not pale gray as would be expected on a young male Long-tailed. Note the small fish she caught in the photo. More photos of this bird are at my eBird checklist for the day, URL below.
The west side of Montrose Harbor is still open and has been hosting a decent variety of waterfowl for us and for the time of the year, including Greater and Lesser Scaup, a Bufflehead, an American Black Duck, and until recently, a Brant and Snow Goose. This will probably change with the bitterly cold air forecast to arrive over the weekend.
Greater and Lesser Scaup (click to see the larger version)
Greater and Lesser Scaup can be challenging to identify. Seeing the two together makes the differences between them easier to compare. On January 25, I saw and photographed an adult male Greater Scaup with an adult male Lesser Scaup inside Montrose Harbor. The photo nicely shows the main differences, namely the fuller, more rounded head of the Greater and the narrower, more pointed head of the Lesser. Also note the purer white sides of the Greater compared to the grayer sides of the Lesser. If you get the chance to compare two similar species side by side, take the time to study them closely. More photos of these birds are at my eBird checklist for the day, URL below.