Did you know?
A structural complex probably unique to toucans
involves the modification of several tail vertebrae. The rear
three vertebrae are fused and attached to the spine by a ball-and-socket
joint. Because of this, toucans may snap their tail forwards until
it touches the head. This is the posture in which they sleep,
often appearing simply as a ball of feathers, with the tip of
the tail sticking out over the head.
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