Flightless birds were more common before human-driven extinctions – new study

Evolution towards flightlessness has been much more common through history than scientists once thought.

Tim Blackburn, Professor of Invasion Biology , UCL • conversation
Dec. 2, 2020 • ~6 min

How do geese know how to fly south for the winter?

Geese honk loudly and point their bills toward the sky when they're ready to start the migration. Here's how they know it's time, how they navigate and how they conserve energy on the grueling trip.

Tom Langen, Professor of Biology, Clarkson University • conversation
Nov. 16, 2020 • ~8 min

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