Hi guys

I'm planning to do a little wildlife photography over the next few weeks and I'll probally use rollie 400s (this is what's in my bag) I used some last summer and liked the contrast with it, red squirrels is what I'm after in a forest setting, any advice out there on colour of filter or even should I use one at all ?, I normally take these using either Fuji sensia 400 or Kodak 400vc, both work well but I can get the Kodak processed within a few hours of taking the images, now I want to go all mono on these guys and I'm gonna try hopefully next weekend.

Any advice out there,