The trash to the eagle boss is fought similar to the guantlet of shattered halls.   Two tanks are needed for this trash.  The route has 4 or 5 pairs of mobs.  Once the event begins, groups of eagles will spawn from in front of the group and a pair of warriors will spawn from behind.  These adds will keep spawning until the last mob is killed (he stands on the steps of the temple and has a different name).

A tank (pref. pally) will tank the adds in front kill the mobs that are already there first.  the tank in the back will tank the warriors as they come (they don't hurt much).  continously move forward.  When there are a lot of birds, perform concentrated aoe attacks on them to get them all down quickly.  When there are too many take them down as quickly and efficiently as possible.  The key here is really to just keep moving.  stand too long to kill things and you will end up with too many adds.