Rocs are some of the largest and deadliest birds on Vana'diel. With high evasion and multi-hit attacks, rocs can evade what you throw at them and then counter with a relentless blow of attacks. Even the most prepared and experienced forces should be wary.
Rocs can drop feathers and plumes when defeated. The feathers are used in a few recipes, most notably the highly-prized Icarus Wing. The plume is sought after by high level crafters in clothcraft, leathercraft, and woodworking. The plumes can also fetch a decent price with certain merchants.