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The Colorado River Delta is almost entirely dry, but environmentalists are hoping they can keep getting water to restore habitats after a U.S.-Mexico agreement expires in 2026.

When two closely related bird species found themselves in overlapping habitats, they found a clever solution – one altered its song to be distinct from the other. And according to new research from CU Boulder, the adaptation shows in real time how human development is impacting ecosystems on the Front Range. We learn more on today's ITN.

Trumpeter swans were once thought to be extinct in the continental US. At least until a flock was found in Yellowstone, making the region a big reason for the iconic bird’s rebound.

As many as 200,000 birds are estimated to have migrated across Summit County overnight some days this month. Dark skies will help the birds on their journey.

Colorado’s bald eagle population was hit hard by avian influenza in 2022, reducing the number of nests by about 20 percent. But now, the eagles have made a remarkable recovery.

A new Audubon Society report on birds and power transmission lines pushes for a clean energy grid, but warns the buildout could harm birds. Yet the report contends collaborative planning can create a symbiotic relationship between those pushing for clean energy and others seeking to protect bird species.

It's National Pollinator Week. From bees to butterflies, hummingbirds to moths, these species play a crucial role in agriculture and healthy ecosystems.

The warming climate has led to some subtle changes in the size and wings of birds — some faster than others, according to new analysis from researchers at the University of Michigan.

Every spring, a mating osprey couple returns to the same nest in Grand Lake to lay their eggs and raise their fledglings. Osprey enthusiasts can follow along via livestream courtesy of the osprey cam.

As of March 7, Colorado has had 206 wild bird samples that have tested positive for the H5N1 virus, the most in the region.