ABC News | Endangered swift parrots pushed into tragic love triangles by sugar gliders ABC News In Tasmania it's breeding time for the critically endangered swift parrot — but something is very wrong. Key points swift parrots. Key points: Swift parrots are one of Australia's most endangered birds that only breed in Tasmania; On top of logging ... Swift parrot polyamory a new threat to critically endangered species' survival Shortage of female swift parrots leading to cheating, love triangles and sneaky sex Study counts the high cost of infidelity for swift parrots |