E2 - Every year, the southern wetlands of the Pantanal become a bird paradise when over 650 species of birds congregate here for breeding.
S5 E13 - Hope rallies the team to release the herd of white-tailed deer. Winter brings a mysterious influx of snowy owls to the rehab.
E1 - Michael Portillo learns what it took to build the Alaska Railroad, then explores Indigenous traditions and an iceberg maze.