The Pirate Mission is back on Mobile devices as of 01/21/2014, running for roughly 9 days. There are more items to collect and more fights than the most recent version available on PC.
Pirate Island changes include:
Fights (Fight Map) - 10 Wins : f=1/12h
Opponents:
Pirate Flags (collect gold) - 35 Flags : ~500k ea @ Lvl 79
Hooks (collect food) - 35 Hooks : ~4k ea @ Lvl 79
Bottles (Combat World) - 20 Wins : f=3 Battles/6h
Parrots (breeding) - 4 (and let's hope there are no bugs like there were for the most recent Alice in Wonderland mission) - go long : ~1 Parrot/40h @ Lvl 79
Grog Barrels (daily collect -- actually twice daily) - 10 Barrels : f=1/12h
Edited to include Mobile, frequency and improve clarity.