Why spring belongs to the seabirds

Between late March and early June, Britain's cliffs turn into the busiest address in Europe. Around eight million seabirds breed here each year, and a good clifftop path in spring can put you within a few metres of fulmars, guillemots, razorbills, kittiwakes and puffins going about the serious business of raising young. The birds are not just passing through — they are committed, sitting tight on narrow ledges, and that is exactly what makes spring so rewarding and so delicate.

The season unfolds in a rough order. Fulmars are first, back on their ledges by February and already billing and bowing at each other. Guillemots and razorbills crowd onto ledges through March and April, packing shoulder to shoulder. Kittiwakes arrive to build their seaweed nests on the narrowest outcrops, and puffins appear offshore in late March before coming ashore properly in April and May. By mid-May, if you pick the right cliff, you can see all of them in a single slow hour.

What you will see, and where to look

Half the skill of seabird watching is knowing which part of the cliff to scan. Work from the top downwards, then back up again.

• Fulmars nest on grassy, sloping ledges, often just below the path. Look for a stiff-winged, grey-and-white glider and a bird sitting upright like a small bottle. They are famously tame and will spit oil if you crowd them.
• Kittiwakes take the vertical faces, building cup-shaped nests of mud and grass on the tiniest of footholds. Listen for their name — a repeated, insistent kitti-wake — long before you see them.
• Guillemots and razorbills share the same ledges and look like a crowd of dark, upright bottles. Guillemots are chocolate-brown and slender; razorbills are blacker with a thick, blunt bill and a white line across the face.
• Puffins prefer soil-covered slopes and grassy tops where they can dig burrows. Look for a stubby, whirring silhouette flying fast and low, usually with a beak full of sandeels.
• Gulls — herring, lesser black-backed and great black-backed — nest on the flatter tops and are the noisiest neighbours you will meet. Give them a wide berth; they dive at intruders and their aim is excellent.

Timing your walk to protect the colonies

The single most useful habit is to walk early in the morning or in the last two hours of daylight. Disturbance is cumulative: a colony that is flushed repeatedly at midday may lose eggs to gulls and crows, or see chicks chilled and abandoned. Early and late, most birds are settled and you will see far more natural behaviour anyway.

Weather matters as much as the clock. Cool, still, overcast mornings are ideal — birds stay calm and stay put. Avoid hot, bright afternoons when heat shimmer blurs the cliff face, and avoid days after a night of storms when birds are already stressed and re-settling.

Avoiding disturbance without cutting your walk short

You do not need to stay away — you need to stay back. On a clifftop path, ten metres of extra distance can mean the difference between a colony sitting tight and a panicked cloud of birds in the air.

• Keep to the path. It exists because it keeps people off fragile clifftop turf and away from burrow entrances.
• Stop, watch, then move on. Lingering directly above a ledge with camera and tripod is what flushes fulmars and gulls.
• Keep dogs on a short lead between March and July, and firmly away from the cliff edge. A dog that slips over the edge is a danger to itself and to every bird below.
• Use binoculars rather than your feet. A decent 8x42 pair will show you a puffin's beak from twenty metres — no need to get closer.
• Never fly a drone over a seabird colony. It is distressing, and in many places it is also against the law.

Reading the tide and the weather

If your walk takes in any shoreline — and most good seabird paths do — the tide is your timetable. On a falling tide you get rock pools, waders and the chance to see birds fishing close in; on a flooding spring tide, low-lying paths can be cut off far faster than you expect. Check a local tide table before you set out and note the high-water time, not just the height.

Sea fret is the coastal walker's quiet hazard. A bright morning can be swallowed by fog within twenty minutes, and clifftop paths with unfenced edges become genuinely dangerous. Carry a compass, know your escape route inland, and be willing to turn back. An onshore breeze of force four or more will also push birds off the ledges and put spray over the path, so save those days for an inland stroll.

Kit, paths and personal safety

• Wear boots with real grip. Chalk and granite clifftop paths are often muddy, loose and crumbly at the edges.
• Take a paper map as well as a phone, plus a windproof layer — headlands are reliably ten degrees colder than the car park.
• Tell someone your route and rough return time. Mobile signal on remote cliffs is patchy at best.
• Pack out everything, including fruit peel and crumbs. Food waste draws gulls and crows straight to nesting ledges.

Choose a stretch of coast with a well-used path above a known colony, arrive early, settle somewhere comfortable, and let the birds come to you. That is how spring clifftop walking rewards patience: sit still for half an hour and the cliff in front of you becomes a city.