It was so cold at Montrose this morning, October 13, Lake Michigan was steaming. This is a common sight in winter but rare at this time of the year, caused by a large difference in temperature between the water and air (about 30 degrees today early in the morning). Birding was productive, with lots of expected mid fall migrants like Ruby-crowned and Golden-crowned Kinglets, Yellow-rumped Warblers, and Hermit Thrushes, plus a few late warblers and other passerines. Many insect-eating passerines were feeding on the ground or close to it because of the cold. I ended up with 56 species in about 4 hours. Best birds were Semipalmated Sandpiper, Merlin, Yellow-billed Cuckoo, Eastern Wood-Pewee, and Nelson’s Sparrow. Link to my eBird checklist for the day below.