The centenary of this recent extinction offers an opportunity for this film to sharply focus new attention on habitat conservation and species survival ― and help us avoid the fate of the passenger pigeon for future species. With cutting-edge CGI animation techniques, this film recreates the glory of passenger pigeons in flight as well as the ways in which 19th century humans destroyed them all ― with ruthless, no-limits shooting. The film highlights the important lessons of the past to offer solutions to the immediate challenges species face.