Media Type: Video The Green Screen: Warblers and Blackflies Added: August 29, 2012 - 16:44 Learn more about the changing migration patterns of the warbler and how to protect yourself from blackfly bites this season. Tags: Education No transcript available. Related Videos & Podcasts Conversations with Archaeologists: Roberta Shaw ► Conversations with Archaeologists: Dr. Peter Storck ► Conversations with Archaeologists: Dr. Eileen Schuller ► The Space Between ►