Spring is right around the corner. And if you're going to be birding, you might as well be eBirding. You should definitely be eBirding on May 5th, eBird’s annual Global Big Day. Last year birders recorded more than 6600 species from 160 different countries on one day. eBird’s Project Coordinator Ian Davies joins host Nate Swick to talk about the Global Big Day initiative.

Also, radar ornithologist Kyle Horton talks about Cornell’s Birdcast project, which recently launched live migration maps, an amazing tool to help birders maximize their opportunities to see great birds this spring.

Nate is back in the driver's seat to talk about warbler obsession, Florida birding, and birds at airports.

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23. The Math Lab with Robyn Tedesco