Pigeon Pioneers: How Flying Rats Made it to Mass Effect's Citadel

With all of this focus on Mass Effect 3 »3/19/12 3:30pm3/19/12 3:30pm's more human failings, it's easy to overlook the true heroes of this epic space adventure: the pigeons that traveled to the farthest reaches of the galaxy, spreading their universal message of "give us food or we'll poop on you". How did these brave birds make it to the Citadel?