I spent most of the mid morning working these guys solo. First my tamer/mage.. went through my pets and me in no time.. tried a dexer with 100 energy weapon and bird slayer tali.. 2 hits and I was down. Got my Bard/mage out...
after hours and multiple head bangs on the desk here's what I can tell you.
Disco'd only with 120 disco
Provo 2 on each other, only after both are disco'd and my 115 provo took me hundreds of tries.
If you get lucky you get a full map pop in your bag upon dead. Loot is rather crappy for the difficulty of these guys.
If you are unlucky you get a fragment of a map.. have to kill 3 of them to get enough pieces.
If you throw ev's at them, better invis immediately.. they will pull you into them.. and they hit hard.. also have a spell that slows you way way down, both casting and moving.
My bard/mage/necro managed to get corpse skin and ev's on them, but in the end, it was provoking 2 on each other, and when I was down to redline on my last bird, it was best just to throw bolts or cor por's on them.
When you get a full map, then go to the Brit Zoo and talk to the Quest giver, all you really need to say is "Brush" to move on.
Use the T-map map for the location of the nest on your map, double click the brush, target the map, then target the ground.. you will get a gump telling you are either very close, nearby or nothing in the area.. when you hit the spot, there's a nice nest (hint hint.. would love that for deco).. destroy the egg, a bag pops up.. can't pick up the bag, but be sure to open it for your prizes!