Why Woodland Birding Starts with Your Ears

A mature British wood in spring is a crowded place, and most of its residents are hidden. Foliage, bark and distance mean you will hear perhaps ten birds for every one you manage to see. That is not a frustration to be overcome but a skill worth learning. A handful of distinctive calls will tell you what is around long before you lift your binoculars, and knowing what to listen for turns a pleasant walk into a proper survey.

Start with three species. Between them they cover the full range of woodland sound: a song, a contact call and a piece of mechanical percussion. Learn these and you have a scaffold onto which you can hang everything else.

The Song Thrush: Loud, Clear and Never in a Hurry

The song thrush is the most generous teacher in the wood. Its song is built from short phrases, and each phrase is repeated two or three times before the bird moves on to the next. That repetition is the giveaway. Where a blackbird pours out mellow, fluting notes in a leisurely, improvisational way, a song thrush delivers crisp, ringing phrases in pairs and triplets, as if reading from a list.

Listen for it from a high perch — a chimney pot, a bare branch, the top of a hawthorn — singing at dawn and again in the evening. In mild winters, males begin as early as January, which makes the song thrush one of the first voices of the year.

Two other sounds are worth knowing:

• A sharp, clipped “tchook” or “tsip” alarm, often the first sign of a sparrowhawk moving through.
• The anvil. Song thrushes smash snails against a favourite stone, and the faint tap… tap-tap of shell on rock is a reliable clue that one is nearby.

Avoid confusing it with the mistle thrush, whose song is wilder, sadder and far less repetitive, and which often sings from a treetop in wind and rain — the old country name “storm cock” suits it well.

The Nuthatch: A Ringing Whistle from the Canopy

The nuthatch is a bird you will almost always hear before you see. Its main call is a loud, ringing series of whistles — often written as “chwit-chwit-chwit” — pitched high and carrying a surprising distance through the trees. Some people describe it as a squeaky toy being squeezed rhythmically. Once heard, it is very hard to mistake.

Alongside the whistle, listen for a soft, rapid “churr”, and for the bird’s habit of tapping quietly at bark while it works. The nuthatch is the only British bird that habitually descends a tree trunk head-first, so if you hear the call and then spot a small, short-tailed, blue-grey bird moving downwards, your identification is confirmed.

Expect it in mature broadleaved woodland, especially oak and beech, and increasingly in parks and large gardens. It is absent from Ireland and from much of Scotland, so if you are north of the border and hear a similar whistle, check whether a great tit is responsible. Great tits have a vast repertoire, but their songs usually run to two or three repeated notes rather than the nuthatch’s insistent, evenly spaced run.

The Great Spotted Woodpecker: Drumming and the “Kek”

Great spotted woodpeckers are heard in two very different ways. The first is drumming: a short, explosive roll lasting roughly one to two seconds, produced by striking the bill against a dead branch. It is not feeding — it is advertising. Drumming begins in late winter, peaks between February and April, and is used to claim territory and attract a mate. A great spotted drum is fast and mechanical, stops abruptly, and is often repeated a few seconds later from a different tree.

The second is the call: a sharp, ringing “kek-kek-kek”, sometimes slowing at the end, used as contact and alarm. It carries well and is often the first clue that a bird is present in winter, when drumming is quiet.

Two comparisons are useful. The green woodpecker does not drum much; its signature is the laughing “yaffle”, a descending, slightly manic series of notes that sounds like someone enjoying a joke at your expense. And a great spotted drum is much shorter and sharper than the rolling, unhurried drum of a lesser spotted woodpecker, now a scarce bird in most of Britain and worth reporting if you find one.

Other Voices You Will Meet

Once you have these three fixed in your memory, the wood starts to make sense. A few more sounds fill in the gaps:

• Blackbird: rich, mellow, unhurried fluting, with pauses between phrases. Usually from a low branch or rooftop at dusk.
• Mistle thrush: a rattling, dry alarm like a football rattle — quite unlike anything else in the wood.
• Great tit: endlessly inventive, but the classic two-note “tea-cher, tea-cher” is unmistakable once learned.
• Treecreeper: an extremely thin, high “tsee”, so slight it can vanish into the background until you know to listen for it.

Building Your Ear: A Few Practical Habits

Identification by sound is a cumulative skill, not a talent. These habits will speed it up considerably:

• Learn one bird at a time. Spend a whole walk on song thrushes, then a whole walk on nuthatches. Trying to absorb everything at once rarely sticks.
• Go early and stand still. The hour after sunrise is the loudest of the day, and birds settle quickly once you stop moving.
• Pick calm days at first. Wind masks high frequencies, and it is exactly those thin, high calls that cause the most confusion.
• Follow the sound, then look. Move slowly towards the noise, stopping every few paces, and let the bird show itself rather than chasing it.
• Note the season. Drumming means late winter and spring; full song means April and May; thin contact calls in autumn usually mean mixed feeding flocks on the move.
• Record what you hear. A few seconds on a phone, played back later in a quiet room, will teach you more than an hour of guesswork.

Within a season you will find that a familiar wood has doubled in size. Birds you never noticed were there have been announcing themselves all along — you simply had not yet learned the language.