Once a year, scientists and veterinarians check on nesting birds at Baker’s Lake in Cook County, where they can also learn a lot about the environment – and predict possible health concerns for humans.

A research team with a Chicago connection has uncovered new evidence about the devastating impact of the dinosaur-killing asteroid that struck Earth about 66 million years ago.

A new Magellanic penguin chick hatched Saturday at Shedd Aquarium, just hours before Mother's Day. 

One of the world’s most endangered birds finds itself in even greater peril after a hurricane ripped through its habitat last year. But you can help – by drinking beer. 

New residents of the aquarium’s “At Home on the Great Lakes” exhibit are spending their first days bonding with their mother. 

On Feb. 10, Lincoln Park Zoo welcomed a new baby bird, the first African penguin chick hatched and reared at the zoo's new penguin habitat. 

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. 

Despite the early April snow showers, a recent bird sighting in Cook County is a strong sign that warmer spring weather is just around the corner.

The yet-to-be-named chick is healthy and being hand-reared by animal care staff, the zoo said this week.

Bird experts from around the world are flocking to a Chicago Audubon Society event in Chicago this weekend. We speak with conservationist George Archibald, who delivers the keynote speech at event.

Meet the man who literally went to the ends of the Earth to see as many bird species as possible.

The colorful display of feathers common among hummingbirds has roots in a bird-like Chinese dinosaur from 161 million years ago, a new study finds.

In 2015, Noah Strycker became a birding legend after a yearlong journey across seven continents to see more than half the world’s 10,000-plus bird species. He speaks this month in Chicago about the adventure and his new book “Birding Without Borders.”

A trio of tropical birds has landed in Chicago this winter to show off their vibrantly colored feathers and occasional dance moves – but they won’t be here for long.

An owl loving Chicago photographer takes us along as he shoots a majestic snowy owl during the last “invasion” in 2014.

Meet Drake, Magdalena, Pebbles and Wellington. They are the first penguins to turn 30 at Shedd Aquarium, and among the oldest penguins in human care across the U.S.