Matthew Gavin Frank, Davy Rothbart & Cheryl Sanford, and Andrew Bird & Jimbo Mathus

<p>Host Luke Burbank and announcer Elena Passarello talk birds of all kinds this week; writer Matthew Gavin Frank discusses the controversial world of diamond-smuggling pigeons; filmmaker Davy Rothbart and his subject Cheryl Sanford unpack 20 years of filming her family in their documentary <em>17 Blocks</em>; and musicians Andrew Bird &amp; Jimbo Mathus, former bandmates of the Squirrel Nut Zippers, perform "Sweet Oblivion" from their collaborative album <em>These 13.</em> </p>