What's That Bird Song?

Why did T. Rex have such tiny arms? That’s what our listener Nora wants to know. We’re going to find out why the biggest, most powerful predator to ever walk the Earth did it with a teeny tiny set of arms. Scientists have been coming up with answers for this question for decades ...  Show more

In this final mailbag episode of Summer 2026, Marshall and Lindsay address two listener questions, and learn about a surprising twist of evolution. Plus, listener reviews and comments! To get an invite to the next Tumble meetup, as well as receive birthday shout outs and ad free ...  Show more

Have you ever watched birds soaring in the sky and wondered... How do they fly like that? Our guest,  Alex Troutman, wildlife biologist and science communicator, is here to explain it all. A lifetime birding enthusiast, Alex turned his interest in birds into a job as a scientist. ...  Show more

Chirp chirp, y’all! Ever wondered what birds mean when they’re singing their little birdy hearts out? This week, Molly and cohost Bessie explore the kinds of sounds birds can make, and how those sounds are used. Birdsong researcher Kristin Brunk breaks down some sweet tweet scien ...  Show more

How do birds hear if they have a hole through their heads? Where does matter come from? Just some of the questions put to Dr Karl this week for the Up All Night science phone in. 

Break out your binoculars! We're heading through the musical forest in search of bird music. No, not actual birds, but music meant to sound like them. From Saint-Saëns to Jennifer Higdon, Kiana and Fiona show us the musical aviary, and how nature has inspired composers for centur ...  Show more