The Blackwater National Wildlife Refuge in Maryland is on the migration path of numerous bird species. Refuge scientists have helped endangered species thrive while combating the effects of sea level rise.

Originally released by Smith Productions, 2014. Streaming video file encoded with permission for digital streaming by Infobase on March 28, 2019.

Blackwater National Wildlife Refuge (2:20); --Blackwater's Bird Populations (4:48); -- Blackwater's Forests (1:33); -- Blackwater's Animal Research (2:43); -- Blackwater's Nuisances (4:19); -- Blackwater's Management (4:00); -- National Wildlife Refuge System (1:31); -- Refuge System's History (4:18); -- Refuge Visitors (4:32); -- Credits: Maryland (0:07);.