It all depends on just what was burnt, the condition of the area, along with if they are going to allow you into the area.
Most fires are not a scorched earth type of fire but they jump around leaving green areas that the animals will flock to for shelter. If it was long enough ago, even a couple of months you will see new growth that deer and elk love to munch on.
Way back in 2002 there was a huge fire in the Utah Book Cliffs. My brother in law had a elk tag for the unit. On our scouting trips we found deer and elk living in the ashes munching on the fresh shoots that were coming up out of the ash. There were even a number of bears that were feeding on the animals that didn't make it out.