The half-hour before sunrise

Most people hear the dawn chorus without ever really listening to it. It arrives as a wall of sound, pleasant but anonymous, and then the kettle goes on and it is forgotten. Learn half a dozen songs properly and the whole thing unlocks. Suddenly you can hear conversations rather than noise, and a walk to the station at six in the morning becomes something you look forward to.

The chorus follows a rough order, and knowing that order is half the battle. It begins about an hour before sunrise, in near-darkness, with just a few voices. As the light strengthens, more species join in, the volume rises, and then — quite abruptly, often within twenty minutes of sunrise — it falls away again as birds turn to feeding. Spring is the peak, from late February through to June, though robins and blackbirds sing well into autumn.

The reason for the sequence is practical. Birds with larger eyes can see well enough to feed in dim light, so they have spare time to sing early. Robins and blackbirds are first up for exactly that reason. Smaller, sharper-eyed birds such as tits and wrens wait until the light is worth something.

The robin: thin, wistful, deceptively constant

The robin is usually the first voice you hear, and in winter it is the only voice you will hear on many mornings. The song is high, thin and silvery, a trickle of wistful notes that seems to wander rather than build. Listen for a sweet descending phrase with a slightly melancholy, almost hesitant quality, as though the bird is thinking aloud.

Robins have an astonishing range of phrases and rarely repeat themselves in the way a great tit does, which makes them harder to pin down at first. The tell-tale is the tone: delicate, pure, pitched higher than the blackbird below it. In late winter, robins also sing at night under streetlights, so if you hear a small, beautiful warble at 3am, that is almost certainly what it is.

The blackbird: fluty, unhurried, deliberate

The blackbird is the easiest of the four to learn and the most rewarding to listen to. The song is low, mellow and flute-like, delivered in unhurried phrases with clear pauses between them. Each phrase tends to tail off into a squeaky, slightly creaky note before the bird draws breath and begins again.

Think of it as a jazz singer taking their time. Blackbirds sing from a high, exposed perch — a chimney pot, a television aerial, the top of a bare ash — and often sit with the yellow bill clearly visible. Once you have learned the blackbird, you have the yardstick against which to measure everything else. Anything lower, throatier and more musical than a blackbird is probably a song thrush; anything higher and thinner is a robin.

The great tit: two notes you will never forget

The great tit is the most recognisable of all British garden songs, and the one most people already half-know without realising it. It is a clear, ringing, two-note phrase, endlessly repeated: “tea-cher, tea-cher, tea-cher.” Some people hear a squeaky bicycle pump being pushed, and that is just as good a description — the same metallic, rhythmic quality, with a slight scratch in the note.

Beware, though. Great tits have a notoriously wide repertoire, and some sing a three-note seesaw or a rapid burbling trill. If a song sounds like a great tit but does not fit, it still might be one. The persistent, mechanical repetition is the clue.

The wren: a tiny bird with enormous volume

Nothing in the garden sounds quite like a wren. For a bird smaller than your thumb, it produces a volume that borders on the absurd — a fast, explosive burst of bright notes and buzzy rattles that is over in three or four seconds, then repeated almost immediately, often with no visible pause between verses. Listen for a quick, rattling, machine-gun trill with a hard, almost metallic buzz in the middle, as if the bird is holding forth on a matter of real importance.

Wrens sing from surprisingly low perches, often tucked deep in a hedge or emerging briefly from ivy, so the sound frequently seems to come out of nowhere. If you hear a huge, rattling, urgent song and cannot find the singer, look lower, not higher.

Filling in the gaps — and getting better at it

Once those four are secure, the rest of the chorus starts to separate out. The song thrush is the next one to learn: it repeats each phrase two or three times before moving on, like a musician practising a line. The blue tit is a thin, high, tinkling jumble, often ending in a soft, buzzy “churrrr.” The dunnock delivers a quiet, hurried, slightly scratchy warble from deep inside a hedge. Beneath everything, the wood pigeon provides the rhythm section with its five-note coo, and the collared dove answers with three.

• Go out earlier than you think. Arriving twenty minutes before sunrise puts you in the first, simplest phase of the chorus, when fewer birds are singing and every song is identifiable.
• Learn one bird per week. Pick a species, find a singing bird, and stay with it for five minutes. Do not try to learn the whole chorus at once.
• Watch as well as listen. Seeing a robin open its bill to a particular phrase fixes that sound in your memory far faster than hearing it alone.
• Hum the rhythm back. Pitch is hard to hold on to; tempo and pattern are not. “Tea-cher, tea-cher” works because the rhythm is unmistakable.
• Use late winter. From mid-February to early March, only a handful of species are in full song, so each one is much easier to isolate.

Give it a few weeks and the morning walk will never sound the same again. You will hear the robin before you see the paper shop, catch the blackbird on the chimney opposite, and smile at the wren shouting from the hedge. That is the whole pleasure of it — the ordinary suddenly becoming legible.