In reply to annie le:
You sound rather confrontational.
If forest operations are being carried out, and you have an interest in the area, perhaps you might ask the forest manager why.
Have you asked why there's an area of clearfell ( I'm not sure what you mean by 'complete' clearfell)? You may be surprised at the answers, that is, if you allow your head to move from 'somewhere small and dark' and begin to see the bigger picture.
Who knows- it might be felled for species diversity, creation of glades, leks etc.
Forest management in the UK, in an area of high recreational and biodiversity importance is always about managing conflicting demands.
Whilst I don't know you personally, I will make this observation on the basis of the wording of your post:
In the UK, it seems the majority of people do not understand forest management. By contrast, in Northern France, I have seen how the local communities use the forests rather intensively for firewood, hunting, riding, mushroom hunts, walks, cycles etc. It is a way of life. There, when an area is set aside for natural regeneration of e.g. Oak, it does not require fencing or signs to have people steer clear of it.
Contrast this to the UK-the not uncommon 'Yay!' bikers filled with a sense of self entitlement to the whole playground. It aint rocket science to to see that an element of zoned activities are beneficial to the wellbeing of the forest as a whole. The impact of the odd bike going through an area during the less critical times of a bird's life cycle are likely minimal... ( hopefully you can see where I'm going on this one).
Contact the office managing the woodland and ask for a copy of the management plan- You'll see how clearfell is carefully planned, scaled, timed, and zoned. The end result may look a bit messy for a while to someone of urban sensibilities. In this cycle decades long, there'll be a gradual recolonising of the area afterwards.
