yes can get Undead Bird feather from 9th, 10th and 11th round of 15 round challenges
this link shows rewards for each round(i really like this event ,u can get very good rewards)
http://wl.igg.com/guide/guide.php?acid=58&a...
here this link shows monsters need to be fought in 9th round
http://wl.igg.com/guide/guide.php?acid=126&...
IGN = taisan, Guild =*none*, Server =Leo1
timezone = GMT +5:00 (Maldives)
Spoiler: