Break out your checklists and get ready for another summer of splits and lumps from the AOS North American Classification Committee. It's time for our annual look at the proposed changes to the bird lists, the longest running segment on this podcast. And for every single one of those episodes, we've turned to biologist and birder Dr Nick Block of Stonehill College in Massachusetts. It's an interesting set of proposals this year, with Warbling Vireo splits, titmouse lumps, and lots of genetic mayhem.

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