Related Program: NatureNotes Mystery Bird's Nest By Rudy Mancke • Aug 16, 2018 Related Program: NatureNotes TweetShareGoogle+Email View Slideshow 1 of 2 A Blue-gray Gnatcatcher nest. USGS Bee Inventory and Monitoring Lab [Public Domain Mark 1.0] via Flickr View Slideshow 2 of 2 A Blue-gray Gnatcatcher. Kelly Colgan Azar, via Flickr [CC BY-ND 2.0] The Blue-Gray Gnat Catcher lives here in the warmer months. They build nests of spider silk or caterpillar silk, and cover them with lichens. Listen Listening... / 1:00 Listen... NatureNotes is a production of South Carolina Public Radio. Tags: NatureNatureNotesSCETV Appscetv.orgbirdsTweetShareGoogle+EmailView the discussion thread.