Okay, but what makes a bird… a bird? Hint: Dinosaurs!

Okay, but what makes a bird… a bird? Hint: Dinosaurs!

E14. What do feathers, toothless beaks, and a 66-million-year-old asteroid have in common. Paleontologist Dr. Daniel Field, University of Cambridge, joins Scott to unpack how birds evolved from dinosaurs, and why defining "bird" is trickier than you think.

In this episode you'll hear about:

  • Why Archaeopteryx had half the features of a modern bird and lacked the other half, and what that tells us about 150 million years of evolution
  • The "Wonderchicken," a tiny fossil from the border of Belgium and the Netherlands that rewrote what we know about birds surviving the asteroid impact
  • How micro CT scanning lets scientists digitally peer inside rocks to study fossils at micron scale without ever touching them

Listen wherever you get your podcasts, and don't forget to subscribe so you never miss an episode.

All audio, video, and images in this episode are either original to Okay, But... Birds (© Okay Media, LLC) or used under license/permission from the respective rights holders. Bird media from the Macaulay Library is used courtesy of the Cornell Lab of Ornithology as follows:

  • Great Spotted Kiwi, William V. Ward, ML810
  • Southern Cassowary, Linda Macaulay, ML57219
  • Elegant Trogon, David L. Ross, Jr., ML199536
  • Green Heron,, Bob McGuire, ML229117

Asteriornis imagery and video courtesy of Dr. Daniel Field, University of Cambridge.

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Avsnitt(36)

Okay, but what's the deal with Darwin's finches?

Okay, but what's the deal with Darwin's finches?

E35. Eighteen species of small brown bird on a pile of volcanic rock have taught us more about how evolution actually works than almost anything else on Earth. Not because Darwin figured them out. He ...

13 Aug 36min

Okay, but what's the deal with nests?

Okay, but what's the deal with nests?

E34. Not all birds build one, but for the ones that do, a nest has a single job and a shockingly wide range of ways to get it done. Dr. Vanya Rohwer, Curator of Birds and Mammals at the Cornell Univer...

6 Aug 29min

Okay, but how do birds handle a heatwave?

Okay, but how do birds handle a heatwave?

E33. When the air temperature climbs past a bird's own body temperature, staying cool stops being free and starts to cost them water they may not have. Dr. Blair Wolf, University of New Mexico, has sp...

30 Juli 26min

Okay, but how does wildfire smoke impact birds?

Okay, but how does wildfire smoke impact birds?

E32. Wildfire smoke is blanketing more of the map every year, and it turns out a smoky sky changes everything for birds, from how they breathe to whether we can find them at all. Dr. Olivia Sanderfoot...

23 Juli 31min

Okay, but did birds invent music?

Okay, but did birds invent music?

E31. If a bird sings a phrase worthy of Beethoven, is that music, or just biology in a nice outfit? Dr. Hollis Taylor, a violinist, composer, and ornithologist, has spent more than two decades recordi...

16 Juli 29min

Okay, but is the dawn chorus getting quieter?

Okay, but is the dawn chorus getting quieter?

E30. That wall of birdsong outside your window at sunrise has a name, a structure, and a surprising amount of drama. This week Scott talks with Dr. Dan Mennill, a professor at the University of Windso...

9 Juli 34min

Okay, but what's it like as a bird at the top of the world?

Okay, but what's it like as a bird at the top of the world?

E29. Standing at 11,000 feet, lungs burning, Scott watched birds go about their afternoon in the exact thin air that had nearly taken him out. This week he sits down with Dr. Chris Witt, evolutionary ...

2 Juli 34min

Okay, but does easy living make birds dumber?

Okay, but does easy living make birds dumber?

E28. A bird's brain is the most expensive thing it owns, and evolution doesn't hand one out for free. Dr. Carlos Botero, Associate Professor at the University of Texas at Austin, has spent a decade tr...

25 Juni 32min

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