Every year, birders look forward to the check-list supplement from the American Ornithological Society (formerly the American Ornithologist's Union), and this year is no exception. In fact, 2017 offers a bounty of potential splits for your armchair ticks, as well as some very compelling lumps. In this episode, Nate Swick breaks down some of those taxonomic decision with Nick Block, professor of Biology at Stonehill College and member of the ABA's Recording Standards and Ethics Committee, talking Yellow-rumped Warblers, redpolls, willets and more! And Greg Neise and Ted Floyd return with guest and gull expert Amar Ayyash to talk about one of the most fascinating proposals in this year's batch, the lump of Thayer's and Iceland Gulls. Clines and hybrid swarms are on the agenda! Subscribe to the podcast at iTunes, Stitcher, and Google Play, and please leave a review if you are so inclined! It definitely helps people find us.

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“What did the council decide on item 42?” — answered with the speaker and the moment.

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