While a number of high-profile bills failed to garner enough support during the spring session of the Illinois General Assembly, the designation of an official state bee sailed through both the House and Senate.

On May 9, one of the herd's females gave birth to a calf, the first baby bison born on tallgrass prairie in the county in 200 years, officials estimate.

Most birds migrate over Chicago at night. A new network of acoustic monitors is tracking their movements by listening for what can't be seen.

Isle Royale in far western Lake Superior between Grand Marais, Minnesota, and Thunder Bay, Canada offers scientists a rare opportunity to observe wolves and moose largely free from human influence.

Lincoln Park Zoo is celebrating the arrival of a baby eastern black rhinoceros, born early Thursday morning.

“This little fish is truly one in a million,” said Jenny Richards, senior aquarist at Shedd Aquarium.

Lincoln Park Zoo is celebrating a baby boom of nine eastern massasauga rattlesnakes, the first new arrivals of this federally threatened native species in nearly a decade.

Brookfield Zoo has announced the arrival of a new pangopup — a baby white-bellied pangolin — just in time for World Pangolin Day on Saturday.

Birders inadvertently provided researchers at Loyola University with a key bit of documentation related to invasive species and microplastics.

Holding a snowy owl in his hands was a once-in-a-lifetime opportunity for bird rescuer Ken Reinert. It’s an experience he hopes he never has to repeat.

Six bison released onto prairie in Kane County carry the weight of interwoven hopes: that they can heal both the land and the deep trauma borne by Indigenous people.

The zoo is soliciting potential names for the chick, whose sex is still TBD, via its social media channels and will release the finalists next week as part of a naming contest.

The case of mistaken identity was revealed in a scientific paper published Wednesday in the Royal Society journal Biology Letters.

Jane Goodall, the conservationist renowned for her groundbreaking chimpanzee field research and globe-spanning environmental advocacy, has died. She was 91.

Half a billion birds will be on the move across the U.S. tonight as migration begins to hit its peak, with some 25 million expected to pass over Illinois, putting the entire state on high alert to reduce collision risks.

Chicago’s Urban Birding Festival is back in 2025 with dozens of field trips designed to spotlight the city’s avian diversity. Registration closes this Sunday.