From Scientific American:
Does the natural mushroom-like smell of the kiwi bird help to make it a tempting target for the predators that are eating it out of existence? One scientist thinks so, and he is proposing a deodorant of some kind to protect the birds from extinction.
With all five kiwi species endangered, this is research that you shouldn't turn your nose up at. For the first several thousands of years of their existence, New Zealand kiwis (genus Apteryx) did not have to worry about what they smelled like—there were no mammals there to sniff them out, let alone eat them. That changed when humans came to the island, bringing stoats, rabbits, dogs, cats, pigs and a variety of other hungry critters.
There is more to this. Read it here.