Why Scottish islands are the puffin capital of the UK

Roughly eight in ten of Britain's Atlantic puffins nest in Scotland, and nowhere gives you a better chance of watching them than the islands scattered around our northern and western coasts. Between late March and early August, these small, comic seabirds come ashore to raise a single chick, known as a puffling, before heading back out to sea for the rest of the year. Get your timing and location right and you can be stood a few metres from hundreds of them.

The trick is to understand two things: where they nest and when they are actually on land. Puffins spend the winter far out in the North Atlantic, so a visit in November will leave you staring at empty cliffs. Come in June, by contrast, and the same cliff can be alive with birds carrying beakfuls of sand eels back to their burrows.

The best islands and colonies to aim for

A few islands reliably deliver, and they suit different kinds of traveller.

• Lunga, in the Treshnish Isles — often described as the finest puffin encounter in Britain. Boat trips from Mull and Iona land here in summer, and the birds are famously relaxed around visitors.
• Staffa — usually paired with Lunga on the same trip, and a good fallback if landings on Lunga are cancelled by swell.
• Isle of May, Fife — a National Nature Reserve in the Firth of Forth, reached by boat from Anstruther. Excellent for a day trip and brilliant for close views from the paths.
• Shetland — Sumburgh Head and Hermaness on Unst hold enormous colonies. Fair Isle is exceptional if you can get there.
• St Kilda — the largest colony in the UK, but a serious expedition destination requiring a long sea crossing and settled weather.
• Orkney — the cliffs at Noup Head on Westray and the RSPB reserve at Marwick Head are both rewarding.
• Farne Islands — technically Northumberland rather than Scotland, but many Scottish operators and travellers include it for comparison.

Timing your visit for the best chance

Puffins arrive on their breeding cliffs from late March, but numbers build through April. The real sweet spot is mid-May to mid-July, when adults are busy feeding chicks and the cliffs are at their busiest. By the first half of August, most birds have gone, sometimes departing almost overnight.

Time of day matters as much as the month. Puffins are offshore fishing early in the morning, so colonies can look oddly quiet at 7am. The busiest, most photographable periods are usually late morning to early evening, and again as birds raft on the water before dusk. On a calm, dry day with a light onshore breeze, you'll see far more activity than in driving rain.

Weather also controls whether boats sail at all. Build a spare day into any island itinerary, and book trips for the middle of your stay rather than the first morning, so a cancellation doesn't ruin the whole trip.

How to watch without disturbing them

Puffins are remarkably tolerant, which is exactly why we have to be careful. A bird that seems unbothered may still be hesitating to enter a burrow where a chick is waiting.

• Stay on marked paths and never walk onto grassy slopes above cliffs — you may be standing on burrows, and puffin chicks can be crushed or trapped.
• Keep a respectful distance, using a zoom lens rather than creeping closer. If a bird stops what it's doing or moves away, you are too near.
• Don't feed or lure birds with food or by imitating calls. Sand eels are their proper diet, and human food does real harm.
• Keep dogs on a short lead, or leave them at home on landing trips.
• Take all litter away, including bits of sandwich and fishing line, which tangles birds and other wildlife.
• Follow the boat operator's instructions on landings and group size, even if it feels over-cautious.

If you're lucky enough to find a puffling that has fledged and wandered inland, don't pick it up. It's heading for the sea by instinct, and the best help is to keep people and dogs back.

Practical tips for a puffin-focused trip

Bring binoculars even if you have a decent camera — they transform a distant cliff into a close-up. Pack waterproofs and grippy footwear; Scottish island landings involve wet, slippery rocks and no shelter. Bin a whole day for each island you visit, and treat the ferry timetable as the skeleton of your plan rather than an inconvenience.

Book boat trips well ahead for June and July, especially on Mull, and expect to pay a deposit. If seasickness is a factor, choose a shorter crossing and take medication before you board, not after. Finally, support local businesses: an RSPB or Scottish Wildlife Trust membership, a coffee in the village hall and a night in island accommodation all help the communities that look after these seabird islands.

A final word on the birds themselves

Atlantic puffins are now classed as vulnerable, with sand eel shortages and warming seas putting pressure on colonies. Seeing them well means seeing them responsibly. Go gently, stay curious, and let the birds get on with the serious business of raising the next generation.