Why Spring and Early Summer Are the Busiest Time on the Cliffs

Between March and early August, the UK's coastal cliffs transform from wind-scoured rock into some of the densest wildlife cities in Europe. Guillemots crowd together shoulder to shoulder, each guarding a single pear-shaped egg balanced on a bare ledge. Kittiwakes weave nests of grass and mud into any available nook, and puffins return from a winter at sea to burrows and boulder slopes they may have used for years. It is a spectacular time to be out on the coast path — and also the most sensitive.

The birds are not simply sitting around; they are incubating, feeding chicks and defending territory on limited energy reserves. Every unnecessary flight caused by a human or a dog costs them calories they cannot easily replace. The good news is that seabirds are remarkably tolerant of quiet, distant observation. With a decent pair of binoculars and a little care over where you stand and where your dog goes, you can enjoy the full drama of a colony without causing any harm at all.

Getting to Know Your Cliffside Neighbours

Learning a handful of species turns a cliff face from a blur of noise into a story. The whitewash — those long streaks of droppings staining the rock — is your first clue to where the nests are concentrated. Puffins are usually found on the softer, soil-topped sections where they can dig burrows, often on grassy slopes above the main cliff. Guillemots and razorbills favour narrow ledges and crevices, while kittiwakes build up the widest, most accessible shelves.

• Puffin — small, dumpy, black and white with a brightly coloured bill in summer. Whirring wings, prone to crash-landing on the water.
• Guillemot — chocolate-brown above, white below, upright like a penguin. Lays one egg directly on the rock.
• Razorbill — similar posture, but with a thick, blunt black bill and a white line across the face.
• Kittiwake — a small gull with black wingtips and a yellow bill, constantly calling its own name: "kitti-wake, kitti-wake".
• Fulmar — gull-like but stiffer-winged, nesting on broader ledges further along the cliff. Often glides past on locked wings.

Binoculars, Distance and the Art of Watching Without Disturbing

A pair of 8x42 or 10x42 binoculars is ideal on the coast: bright enough for dull days, light enough to carry for hours. Brace your elbows against a wall or gatepost, or rest the binoculars on a monopod, and scan slowly along the ledges rather than swinging wildly from bird to bird. A telescope on a tripod lets you watch a single nest from fifty metres away, which is far kinder than creeping to within ten.

Watch the birds themselves for feedback. If a gull rises, or a single puffin flaps off, that is normal. If a whole section of the cliff lifts off in a flurry of alarm calls and circling birds, you are too close, or you have been standing still at the edge for too long. Back away slowly and quietly, and the colony will settle within a few minutes. Repeated disturbance is what causes real harm — eggs chilled, chicks exposed to predators, and burrows abandoned altogether.

Dogs on the Coast Path: Short Leads, Big Difference

Dogs are welcome on many coastal paths, but nesting season changes the rules. A dog that would never dream of chasing a duck can still send an entire guillemot colony into the air simply by appearing on the skyline. Keep dogs on a short lead — two metres at most — anywhere near a cliff edge, and on some reserves a lead is a firm requirement from spring through to late summer.

• Shorten the lead before you reach the cliff top, not after the birds lift.
• Stay on the main path and keep your dog beside you rather than letting it range across grassy slopes, where puffin burrows are hidden and easily trampled.
• If your dog barks at birds, move briskly along and away from the colony. Noise travels further than you think along a cliff.
• Check reserve signage at the car park — some sites ask for dogs to be kept away from certain headlands entirely during the breeding season.

Safe and Considerate Cliff Walking

Cliff paths are often narrow, unfenced and undercut by erosion. Stay well back from the edge, particularly on soft glacial clay or sandy cliffs, and remember that the ground can be hollow beneath what looks like solid turf. Wear boots with proper grip, avoid loose crumbly ground after rain, and if you are walking below the cliffs, check the tide tables before you set out — a rising tide and a rocky shore is a poor combination.

It is also worth thinking about what you leave behind. Tread lightly on the grassy slopes above the cliff, take all litter home, and avoid flying drones anywhere near a colony, which is both disturbing and often prohibited. Where possible, use established viewpoints or reserve hides; they exist precisely so that thousands of visitors can enjoy the spectacle without pressure on the nest sites.

Quietly Better Birdwatching

The great pleasure of cliff watching is that it rewards patience rather than proximity. Settle somewhere comfortable, raise your binoculars, and let the birds come to you — a puffin carrying a beakful of sand eels, a guillemot guiding a single chick towards the sea, kittiwakes squabbling over a metre of ledge. Give them that space, keep the dog close, and you will leave with better memories and a colony that barely noticed you were there.