An adult black-crowned night heron on the nest in Lincoln Park Zoo. (Patty Wetli / WTTW News)

The endangered black-crowned night herons aren’t captive, they just happened to build their nests on the grounds of Lincoln Park Zoo. Why? Because they like having bodyguards.

Joanna Hernandez kayaks in the Chicago River. (WTTW News)

Shedd Aquarium is once again offering an opportunity to explore the Chicago River while learning about efforts to take care of it. The Kayak for Conservation program offers pay-what-you-can tours.

Turtles basking at a Lincoln Park pond. (Michael Izquierdo / WTTW News)

May 23 is World Turtle Day. Sure, it’s a fake holiday, but it’s a good reason to take a closer look at the many species that make their home in northern Illinois.

The scene at Red Gate Woods looks like an eco-disaster but it’s actually the result of invasive shrub removal. (Patty Wetli / WTTW News)

A 1,000-acre, $10 million restoration project is now underway at Red Gate Woods, part of the vast Palos Preserve system in southwestern Cook County.

Four active eagle nests are being monitored in the Forest Preserve District of Will County in 2024. (Forest Preserve District of Will County / Chad Merda)

Sharp-eyed observers have now confirmed hatchlings in three of the four bald eagle nests being monitored on Will County forest preserve property.

Breakwater structures being constructed along the Lake Michigan shoreline in Illinois Beach State Park. (Courtesy of Michels Construction Inc.)

Illinois Beach State Park in Zion on the state’s northern border contains about 10% of Illinois’ Lake Michigan shoreline, with 6.5 miles. But the undeveloped shoreline can erode up to 100 feet per year.

Tamarack Farms, overhead view. (The Conservation Fund)

The Conservation Fund, Illinois Audubon Society and Openlands announced the purchase of the 985-acre Tamarack Farms, which will now become the single largest property within McHenry County’s Hackmatack National Wildlife Refuge.

A monarch butterfly cozies up to milkweed in a Chicago yard. (Patty Wetli / WTTW News)

Aster Hasle, a conservation scientist at the Field Museum, said, “Our role in the Midwest is to build that population back up. There is a lot that we can do here to provide habitat that’s going to help.”

A volunteer pulls a freshwater mussel from the Chicago River, Dec. 12, 2023. (Patty Wetli / W

Freshwater mussels can be a river system’s best friend, but they’re missing from long stretches of the Chicago River. Here’s a look at one effort to reintroduce them.

Arnold Randall in a “Chicago Tonight” interview that aired Oct. 18, 2022. (WTTW News)
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From catching walleye to bringing restoration work out of the dark ages to passage of a groundbreaking tax hike, Arnold Randall reflects on his 13 years as general superintendent of the Forest Preserve District of Cook County.

Golden-winged warbler. (Alan Schmierer / Flickr Creative Commons)

Celebrate the golden-winged warbler while it’s still around. It’s suffered one of the steepest population declines of any songbird in the last half century.

(Patty Wetli / WTTW News)

The grant was awarded through the America the Beautiful Challenge. The program, now in its second year, is funded in part by the Bipartisan Infrastructure Law.

(Patty Wetli / WTTW News)

The core principle of “leave the leaves” is to manage the leaves on site. It doesn’t mean to just leave them where they fell.

Trail maps are available at the forest preserve district's various nature centers. (Patty Wetli / WTTW News)

When people veer off designated trails, they damage vegetation, compact soil, contribute to erosion and also create pathways for new invasive plant species.

A black-crowned night heron, in its signature hunched stance, with long white streamers just visible. (Dulcey Lima / Unsplash)

The more scientists can learn about the Chicago colony of black-crowned night herons, the more they can help these birds help themselves. Because night herons are hanging on in Illinois by a thread.

Michael Davidson has been named president and CEO of the conservation organization Openlands. (Courtesy of Openlands)

The last time the conservation organization experienced a changing of the leadership guard, the year was 1988, Ronald Reagan was president, Mike Tyson was heavyweight champ, and floppy disks were still a thing.