You've returned from Mothership Zeta and have practically been to Hell and back. Everything seems great, but when you get back to Earth, things have taken a turn for the worse, the Enclave are back. But this time, something isn't right, Their attacks have become extremely accurate, and now it seems that something sinister is rising, something that has been in the west for a long time... Until now...
A Concept art of a Swarm of Wanamingos along with their queen attacking a machine.
This might prove useful :
Fallout3nexus.com
Thanks for the Suggestion ! That will make the Wanamingo factor very easy to create!