The horrible oil spill off Tauranga  in New Zealand affected vast numbers of birds, in addition to all the other catastrophes. Some of those birds are little blue penguins. Some of the birds could be cleaned off in time and have been saved.
But it’s essential to prevent the birds from trying to preen their crude oil-covered feathers before the people can bathe them. And for that, there are penguin jumpers . (Or, in the US, “sweaters.”)
I’m not sure why two self-important birds make me feel happy, but they do.