Penguin Jumpers were invented by Clare Davis (a founder of WildLife Victoria) and brought to life by her friend Margaret Healy and another one of Clares Friends. The project originated with the
Phillip Island Nature Park oil spill of January 2000 and was successfully completed, but the knitting pattern and call for volunteers to donate remained available online. Instead of the 100 or so sweaters needed, thousands were sent. The extra sweaters were stockpiled by the Tasmanian Conservation Trust. After a
2011 oil spill in New Zealand, a local yarn shop put out the call for penguin jumpers, and supplied a pattern. Jumpers were received from all over the world. However, those cleaning and rehabilitating the penguins affected said they neither used nor requested the jumpers: heat lamps were used to keep cleaned penguins warm. Once they are cleaned, there is little danger of them ingesting oil when preening – one of the rationales given for penguin sweaters – and sweaters may in fact do more harm than good to the penguins. A penguin
wetsuit has been made for a penguin who lost his feathers, and similar garments are being made for battery chicken rehabilitation. == Controversy and potential risks ==