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(Courtesy of Peggy Macnamara)

‘The Peregrine Returns’ is not just a story of recovery, but adaptability, exploring how the cliff-dwelling bird has made a home in an urban environment.

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A warbling vireo photographed at Montrose Point Bird Sanctuary by Rob Curtis.

Here’s something that might surprise you: The best place in the entire state of Illinois to see birds during their spring migration is in the city of Chicago. 

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An update to our March story about bald eagles returning to Cook County.

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Dead birds collected by the Chicago Bird Collision Monitors were given to the Field Museum's Bird Division. (Josh Engel / The Field Museum)

For migrating birds, Chicago can be a dangerous place. But scientists, architects and volunteers are now teaming up to make the city a leader in bird-friendly design. The story is told in WTTW's online series “Urban Nature.”

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(Tanya Martinez / Puerto Rico Department of Natural and Environmental Resources)

Experts in Chicago are working to save one of the world’s most endangered birds. 

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In the early 1960s, bald eagles were nearly extinct in the lower 48 states. But government protections and conservation measures have had a huge impact on their numbers. “I think it’s an incredible success story,” said biologist Chris Anchor.

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Photographer Owen Deutsch

After 20 years in the fashion industry, Owen Deutsch wasn’t planning on getting back into photography. But then he discovered a new subject: birds.

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Pete Marra appears on Chicago Tonight with host Phil Ponce on Feb. 1.

Last month, ornithologist Pete Marra sat down with Chicago Tonight to discuss his book detailing outdoor cats’ impact on U.S. bird populations. It was an interview that stirred up emotions on all sides. 

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(Shedd Aquarium)

For the fifth year, members of Shedd Aquarium's Animal Response Team participated in a rescue mission of endangered penguin chicks in South Africa. Learn about their work.

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(Courtesy of the Field Museum)

A Smithsonian ornithologist says outdoor cats are devastating bird populations.

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A long-eared owl (Courtesy of Rob Curtis)

Why are there so many long-eared owls showing up in Chicago this winter? Bird watchers call it an “irruption.”

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Each year tens of thousands of volunteers participate in more than 2,000 Christmas Bird Counts throughout the Western Hemisphere. (Camilla Cerea / Audubon)

There are many Christmas traditions, but one that is especially beloved by people who love birds is the annual Christmas Bird Count. Learn more.

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A Guam kingfisher at Lincoln Park Zoo. This type of bird now only exists in captivity. (Heather Paul / Flickr)

In the mid-1980s, the Lincoln Park Zoo and Brookfield Zoo set up critical captive breeding populations of two bird species native to the Pacific Islands. A new report from the Center for Biological Diversity underscores the impact of such programs.

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Since 2003, a group called the Chicago Bird Collision Monitors has made it their mission to collect birds that have been killed or injured after striking buildings and other structures.

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The long voyage of many migratory birds sometimes ends in Chicago. What one photographer is doing to raise awareness of window kill and light disorientation.

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An estimated 3,000 birds die or get injured from colliding with Chicago buildings each year. A new photography exhibition at the Peggy Notebaert Nature Museum aims to bring awareness to the issue.