Fiddleheads, an early spring delicacy throughout their range, are the young coiled fronds of the ostrich fern (Matteuccia struthiopteris). Nearly all ferns have fiddleheads, but those of the ostrich fern are unlike any other. Ostrich fern fiddleheads, which are about an inch in diameter, can be identified by the brown papery scale-like covering on the read more Facts on Fiddleheads