Carolina Wren Nestlings Fledge Carolina Wren nestlings fledge from Erik Johnson on Vimeo. Dr. Erik Johnson captured five Carolina Wren fledglings on video. Watch as he narrates Mama Wren's efforts in helping to strengthen her hatchlings to get them ready to fledge. Posted by on Thursday, May 14, 2020 - 16:15 Donate to Audubon Help secure the future for birds at risk from climate change, habitat loss and other threats. Your support will power our science, education, advocacy and on-the-ground conservation efforts. Donate Today!