Skip to Main Content
Evolution Earth

The Impact of the Broad-tailed Hummingbirds' Migration

billy barr tells us the lilies emergence is out of sync with the hummingbirds arrival.

Aired 09/27/2023 | Rating NR

Evolution Earth

The Impact of the Broad-tailed Hummingbirds' Migration

Clip: Episode 4 | 7m 35sVideo has Closed Captions

billy barr tells us the lilies emergence is out of sync with the hummingbirds arrival.

billy barr looks through the logs he's been keeping for almost 50 years. He explains how the glacier lilies emergence is becoming more and more out of sync with the broad-tailed hummingbirds arrival after their long migration up from Mexico. When billy started keeping his records in the 70s they arrived on the same day, today the lily is flowering three weeks before the hummingbird arrives.

Aired 09/27/2023 | Rating NR

Arctic Foxes Compete with Red Foxes

Video has Closed Captions

Red foxes are moving further north following the encroachment of the tree line. (3m 19s)

Episode 4 Preview

Video has Closed Captions

At the planet’s frozen extremes, animals can reveal the changes taking place. (30s)

Preserving the Tundra with Reindeer

Video has Closed Captions

Reindeer are playing a crucial role in preserving the tundra by eating forest vegetation. (7m 37s)

Providing Support for PBS.org

Learn Moreabout PBS online sponsorship
Sign in with Email

or

Continue with GoogleContinue with FacebookContinue with Apple

By creating an account, you acknowledge that PBS may share your information with our member stations and our respective service providers, and that you have read and understand the Privacy Policy and Terms of Use.

Are you sure you want to remove null from My List?