Vault_Boy: Out of interest, did any of you ever bother hunting these pigeons? I didn't kill even one for lack of motivation but instead tired to imagine what happened if Shale from Dragon Age: Origins were let loose in Liberty City... ahhh, the carnage.
I tried hunting down all the flying rats using an online guide. I eventually gave up after killing around 50 though. It's actually kind of fun because they are often hidden in some rather obscure or difficult to reach places, so you get to see some pretty interesting parts of the map that you never would have seen otherwise. However, I have to say 200 pidgeons is rather excessive. 50 - 100 would have been enough. It just becomes a chore after a while, so I stopped.