There is a moment, somewhere between the last of the night and the first grey light, when an upland wood belongs entirely to the deer. The air is cold and still, the ground holds the scent of damp leaf litter, and if you have done your job properly, you will hear them before you see them — a soft cough, the snap of a twig, the rustle of a roe doe picking her way between birch stems. Getting close enough to watch without disturbing them is one of the quietest pleasures in British hillwalking, and it rewards a bit of forethought far more than it rewards luck.

Why Dawn, and Why the Woods Above the Valley

Deer are crepuscular by habit, which simply means they feed hardest in the low light at either end of the day. Dawn is the better shift for the observer: the deer have been undisturbed through the night, the woods are silent, and the wind often drops to almost nothing in the hour before sunrise. Upland woods — the hanging oak and birch scrub on the flanks of hills, the conifer edges above a valley, the ragged shelterbelts along a moorland burn — hold good numbers of roe, red and fallow. They use these woods for cover and move out onto open ground to graze, so the boundary between trees and open hill is where you want to be.

Aim to arrive at least forty minutes before sunrise, which in midsummer means a very early alarm indeed. That gives you time to walk in, settle, and let the wood forget you were ever there.

Getting There Without Being Noticed

Most failed deer encounters are failures of approach, not of patience. Deer have excellent hearing and an extraordinary sense of smell; their eyesight is sharp at detecting movement, though less good at picking out a stationary shape. Stack the odds in your favour before you even leave the car park.

• Arrive quietly. Close doors gently, keep voices low, and don't slam a boot lid a hundred metres from the wood edge.
• Walk slowly and stop often. Three or four deliberate paces, then a pause of thirty seconds. You are not walking to a viewpoint; you are letting the wood become used to your presence.
• Stay on established paths where you can. Dry gravel or bare earth is far quieter than deep leaf litter, and it keeps you from crashing through regeneration.
• Soft, dull clothing. Avoid rustling waterproofs if you can; a wool shirt, quiet trousers and muted greens, browns or greys will serve you better than the latest bright shell.
• Use a headtorch sparingly. Keep the beam low and red if possible, and switch it off as soon as there is enough natural light.

Reading the Wind and the Ground

The single most important piece of field craft is wind. A deer's nose will find you long before its eyes or ears do, often from two hundred metres away. Before you plan your last approach, wet a finger and hold it up, or watch a few leaves and grass heads for drift. Then work out a route that puts the wind behind you and the deer in front.

In upland terrain this is not always straightforward, because valley winds are fickle. Air often drains downhill at dawn, then reverses as the sun warms the slopes. If the wind is doing something awkward, do not force it. Better to back off, circle wide using a ridge or a forestry track, and come in from another angle than to push into a swirling breeze.

Read the ground as well as the air. Well-used deer paths — narrow, smooth, pressed into the vegetation — usually link feeding areas to bedding cover. Fresh droppings, scuffed bark, and the frayed stems left by browsing all tell you who is about and how recently. Old tracks and a trimmed browse line mean the deer are resident; sit nearby and let them come to you.

Where to Position Yourself

The best vantage points are slightly above the wood edge rather than deep inside it. A knoll, a small crag or the top of a ride gives you a good line of sight through the trees without silhouetting you against the skyline.

• Sit against a trunk or bank to break up your outline and keep your shape small.
• Pick a spot with a backdrop — a root plate, a gorse bush, a rock face — so you are not exposed against the light.
• Stay below the skyline when the dawn light is behind you, and be ready to freeze the moment a head turns your way.
• Use binoculars rather than creeping closer. Eight by forty-two is ideal for woodland and half-light, and it means the deer need never know you are there.
• Keep movement slow and to a minimum. If they look up, stop, lower your eyes, and wait — most deer settle again within a minute or two.

Watching Without Causing Stress

Deer are wild animals with genuine energetic demands, especially in late winter and early spring when food is scarce. A disturbed animal may abandon a feeding area for hours, or burn energy it can ill afford by running. Watch for the early signals that you are too close: a raised head with ears swivelled towards you, a stamp of a forefoot, a stiff-legged walk, or the sharp bark of a roe warning the wood. If you see any of these, you have your answer.

Back away slowly, or simply sit still and let them move off in their own time. Never follow a group that has already noticed you, and never use a dog to push deer out of cover, even inadvertently. If you find a young deer lying up alone, leave it be — the mother is almost certainly nearby and will return once you have gone.

The reward for all this patience is not a trophy photo or a close encounter for its own sake. It is an hour in an upland wood at first light, tea from a flask going cold in your hand, watching a pair of roe deer browse their way along a mossy ride as if you were part of the landscape. Walk quietly, watch the wind, and give them room — the wood will do the rest.