Australia's tropical north is a biodiversity hotspot. In the Daintree Rainforest, there's a creature that rises above all the other creatures. Meet the Cassowary, a giant, flightless, prehistoric bird. One female, known as Bertha, seems to rule the rainforest. In the face of rival females, feral predators, and extreme weather, the assertive queen Bertha holds forth against an uncertain future.

Australia's tropical north is a biodiversity hotspot. In the Daintree Rainforest, there's a creature that rises above all the other creatures. Meet the Cassowary, a giant, flightless, prehistoric bird. One female, known as Bertha, seems to rule the rainforest. In the face of rival females, feral predators, and extreme weather, the assertive queen Bertha holds forth against an uncertain future.