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Some assembly required. Chicago's first Motus tower, during installation at Big Marsh Park. (Edward Warden / Chicago Ornithological Society)

The radio antenna, positioned at Big Marsh Park on the Southeast Side, helps fill a Chicago-sized gap in a growing network of receivers that's tracking the movement of migratory birds and other animals.   

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The wrong-way small-billed elaenia, photographed Nov. 28, 2021, in Waukegan. (Courtesy of Geoffrey Williamson)

The sighting of a small-billed elaenia over the Thanksgiving holiday had bird lovers flocking to Waukegan from far and wide to catch a glimpse of this South American flycatcher, thousands of miles off course.

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(Courtesy Judy Cheske / Ann Gunkel)

The big reveal will take place at a beachside ceremony with representatives from the Chicago Piping Plovers Team and members of its name-selection committee. Find out how you can tune in virtually.

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Vivid blue-green plumage and an unmistakable bright red bill are hallmarks of the male broad-billed hummingbird. (Courtesy of Nathan Goldberg)

Chicago birdwatchers were treated to a rare glimpse of a wayward hummingbird at LaBagh Wood, far beyond its normal range of the U.S.-Mexico border.