About 60 native bird species have been recorded on Troubridge Island. This includes 21 species of conservation significance and 22 species listed as migratory.
Common birds found on the island include black-faced cormorants, Caspian terns, crested terns and fairy terns, Pacific gulls, little penguins, pied cormorants and silver gulls.
Troubridge Island has been nominated as an Important Bird Area (IBA) known as the Troubridge Island Important Bird Area by BirdLife International. The area supports over 1% of the world populations of both black-faced cormorants (with up to 4000 individuals) and silver gulls (with up to 10,000 breeding pairs) as well as supporting significant numbers of the vulnerable Fairy Tern.
Most of the 31 plant species recorded on the island are introduced. Native species include Marsh Saltbush, Nitre-bush, Grey Saltbush and Coast Daisy Bush.
Sammy the Australian Sea Lion is often seen basking in the sun on the beach.
Above:- "Sammy", Australian Sea Lion. Image c/o Paul VK5PAS.