"I saw nothing" and "I said nothing" are the titles of two children story books by the multi award winning author Gary Crew. The former talks of the experience of a young girl with regard to last thylacine (popularly known as tiger wolf). The Thylacine was a marsupial and an apex predator which became extinct in mid 1930s as the last of its kind died in Hobart Zoo. "I said nothing" is a version of a young boy about a Paradise Parrot which was considered to be the last of the species. This Parrot was seen last in 1927 according to the story. In giving a complete list of Australian vertebrate extinctions from 1788 to the present, Wikipedia says "There are 23 birds, 4 frogs, and 27 mammal species known to have become extinct since European settlement of Australia".