Orc lumberjacks-an inconsitensy?

[Sauron 666]

I'm sure everyone notices the scene early in TTT when the Orcs are camping out and they proceed to cut some trees. Now, I have a problem with this scene since it serves no logical purpose other than to show that trees/ents/hurons don't like having their branches cut <P>Now, we all assume they're cutting branches for a fire but why would orcs build a fire? They knew they were being purused b y the Rohirrim so they wouldn't start a fire because that would attract them. And they don't need fires to cook their food because they don't seem to have an aversion to raw food . They don't seem to need it for warmth either. <P>Just wondering what other peoples thoughts are on this little inconsistensy...<P>(if this is another redudant post of mine i apologize but i couldn't find anything close to this under the search option)