The deformed bill structure
of this starling is reminiscent of one of the Hawaiian honeycreepers,
the 'akiapola'au, to the left, which has a long, more decurved
upper bill and a shorter, chisel-like lower bill. This bill
adaptation has three functions: the upper bill as a probe
to search for insects in bark, the lower bill as a chisel
to peck with, and the two bills together, like a can-opener,
to pry up bark.
It's doubtful that the starling could develop all of these
functions in one lifetime. It might be able to get coins
out of a vending machine more easily....
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