Skip to main content

Up Next

Earth

Earth

Season 1 Episode 1
55:26
Islands

Islands

Season 1 Episode 2
55:26
Heat

Heat

Season 1 Episode 3
55:31
Ice

Ice

Season 1 Episode 4
55:25
Grasslands

Grasslands

Season 1 Episode 5
55:05
Episode 5: The Calling

The Calling

Season 4 Episode 5
53:05
When Whales Could Walk

When Whales Could Walk

Season 51 Episode 1
53:31
Back to Show
Evolution Earth

The Zebra Finches' Battle to Survive

In the Australian Outback, we follow Mylene Mariette as she sets up an unusual experiment that reveals something extraordinary about the zebra finches battle to survive. When it gets really hot out here, these small birds can sing to their unhatched eggs, alerting them to the baking conditions. This in turn causes the new born chick to be smaller, increasing their chance for survival.

Support Provided By
Grasslands
Unlock with PBS Passport
55:05
Forgotten and overlooked, grasslands could hold the key to our planet’s survival.
Ice
Unlock with PBS Passport
55:25
Ice
At the planet’s frozen extremes, animals can reveal the changes taking place.
Heat
Unlock with PBS Passport
55:31
In the hottest places, species are going to extraordinary lengths to survive.
Islands
Unlock with PBS Passport
55:26
Remarkable island wildlife reveals insights into our rapidly changing planet.
Earth
Unlock with PBS Passport
55:26
Animals have a surprising story to tell about our rapidly changing planet.
Active loading indicator