Mother’s Day was extra special for Rollie, a western lowland gorilla at Lincoln Park Zoo who gave birth to a male last weekend. 

The cubs’ arrival – the first litter born at the zoo since 2010 – is a bright spot for one of the world’s most endangered wolf species.

Hudson, a 1,000-pound male polar bear at Brookfield Zoo, underwent a historic checkup this week when he received a CT scan and had semen collected, which was used to inseminate two female polar bears. 

A pair of bills would strip the state of its authority to regulate endangered species that are protected at the federal level but that might require further protections within Illinois.

Kapuki, a 13-year-old eastern black rhinoceros, is expected to give birth to a baby calf in May. 

Mining for coltan, a mineral compound used to make cellphones and other small electronics, has displaced large numbers of Eastern gorillas in the Democratic Republic of Congo. 

The complex and relatively advanced cultures of chimpanzees are disappearing as human beings encroach on previously undisturbed areas of African forest, according to a new study involving researchers from Lincoln Park Zoo.

Researchers estimate that more than one million pangolins have been taken from the wild over the past decade as demand has soared for their meat and scales. What one local institution is doing to save these scaly anteaters.

A rare yellow-hued Blanding’s turtle who called Chicago home has moved out to the suburbs, where she’s helping to spread the word about the plight of her endangered species throughout Illinois.

Zoo officials say they’re hopeful that 2-year-old Ela and newcomer Apache, 7, will have a successful breeding season this winter and produce a litter of wolf pups in the spring.

Conservationists from around the world are gathering this week to focus on saving threatened species and reintroducing them into the wild.

A first-of-its-kind survey of the Chicago area’s remaining grasslands could be good news for several species of threatened birds that once thrived across Illinois.

For the second time this year, Chicago’s DryHop Brewers is joining forces with Lincoln Park Zoo in the name of wildlife conservation, this time for a rare and endangered New Zealand bird.

They are one of the most successful packs within the nationwide Mexican Wolf Recovery Program, but nine of the 10 wolves will leave Chicago for new homes as part of a plan to help save the endangered species.

The 2,300-pound rhinoceros, Layla, logged an important milestone this week, celebrating her eighth birthday just months after overcoming a near-deadly infection.

As part of a new partnership aimed at preserving the endangered Great Lakes species, the turtles will remain at Shedd until they are big enough to be released back into the wild at a protected site in DuPage County.