Saturday was one of the deadliest days for birds in Chicago since 2023, when 1,000 were killed or injured at McCormick Place Lakeside alone.

Staff at Shedd Aquarium are mourning the loss of another rescued beluga whale, announcing the death of 27-year-old Caspian, who arrived at Shedd in August from the shuttered Canadian park Marineland.

Preliminary medical findings released Friday are pointing to chronic gastrointestinal disease as a contributing factor in the deaths of two rescued beluga whales at Shedd Aquarium.

A researcher at Shedd Aquarium tracked a single bluegill traveling nearly 7.5 miles in a single day, or the equivalent of a 52-mile swim for a human.

“At this time, it is impossible to know if these passings are isolated or related,” Shedd said in a statement.

The last beluga whales remaining at a defunct marine park in Canada are now on their way to new homes in the U.S. A pair arrived at Shedd Aquarium on Tuesday morning.

The 23-year-old female whale was part of a second group of four whales that arrived at Shedd in mid-August, following a pod of four who came to Shedd in late July.

Deep in Barrington's horse country, a former equestrian farm is being restored to native wetland and grassland habitat. How's it going?

The belugas are the latest to be rescued from Marineland, a shuttered theme park in Niagara Falls, Ontario, which closed to the public in 2024. Last month, a first group of four beluga whales arrived at Shedd Aquarium.

“Working with wildlife comes with such highs and lows,” said Carolyn Lueck, president of Lake County Audubon Society.

Calling for reinforcements! It’s a piping plover-palooza in Waukegan where the ratio of hatchlings to adults is suddenly 6 to 1.

“I had a better chance of photographing a unicorn,” Luke Dahlberg said of discovering the rare bird.

Barely a week after four beluga whales were transferred from Marineland, a defunct Canadian water park, to Shedd Aquarium, the newcomers have already made an impression on their caretakers.

A complicated, high-stakes rescue of 30 beluga whales from a defunct Canadian water park is underway, with four of them arriving Tuesday at Chicago’s Shedd Aquarium.

An unprecedented international rescue effort is underway to find new homes for some 30 beluga whales. Shedd Aquarium is answering the call.

Chicago piping plover monitors are mourning the loss of a second chick in less than a week at Montrose Beach.