The sword-billed hummingbird has the longest beak relative to its body size of any bird in the world. In fact, it is the only bird that sometimes has a bill longer than its body. The bill is so long, the hummingbird must groom itself with its feet. It also has to perch with its head tilted at an upward angle to be able to balance. But the upside is it can feed on flowers with particularly long corollas, reaching nectar that is unavailable to other hummingbird species. (mnn.com)
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