Key takeaways
- Atlantic puffins stand just 7 to 8 inches tall, making them surprisingly small seabirds with outsized personalities and remarkable ocean survival skills.
- Puffin beaks shift to vivid orange only during breeding season, signaling readiness to nest and attracting mates on the headland.
- Puffins tunnel burrows up to 3 feet deep into soft earth and turf, creating safe spaces to raise their young away from predators.
- Wild puffins typically live 25 to 30 years, returning faithfully to the same breeding grounds and often reuniting with former mates each spring.
- A single puffin can hold 10 to 20 small sandeels crosswise in its beak at once, a remarkable feat of balance while hunting underwater.
The Bright Orange Beak: A Summer Transformation
When puffins arrive at their breeding colonies in spring, their beaks undergo a dramatic change. The dull grey winter bill transforms into brilliant orange, a shift triggered by hormonal changes as breeding season approaches. This vibrant colouration serves multiple purposes: it signals to potential mates that a bird is healthy and ready to breed, and it plays a role in pair recognition among thousands of birds crowded onto the same headland.
The brightness of a puffin's beak matters. Females prefer males with more intensely coloured bills, as this indicates better foraging success and overall fitness. By summer, when you encounter puffins near Hafnarholmi on this East Iceland tour, the males display their most vivid plumage. Come autumn, as breeding winds down, the orange fades back to grey until the following spring cycle begins again.
Burrows Deep into the Headland
Puffins are remarkable engineers. Using their sturdy beaks and feet, they excavate burrows that typically extend 60 to 120 centimetres into the turf and soil of coastal headlands. Some burrows reach depths of up to two metres, creating networks beneath the surface where pairs nest and raise their young. The entrance is often just wide enough for a puffin to squeeze through, which helps protect against predators seeking the eggs and chicks inside.
These underground chambers are dug into soft earth and grass, which is why puffins favour the grassy cliffs around Seydisfjordur and the Northeastern Region of Iceland. The bird lines its burrow with feathers and seaweed to create an insulated nest. A single pair will occupy the same burrow year after year, deepening and maintaining it during the breeding season. Visitors on this 5-hour tour gain insight into the landscape these birds depend on, seeing firsthand the burrow-pocked headlands that host thousands of breeding pairs.
How Many Sandeels Fit in a Puffin's Beak
A puffin's beak contains a remarkable adaptation: a rough palate and flexible jaw that allows it to hold multiple small fish at once. During feeding trips, a single puffin can carry between 10 and 30 sandeels crosswise in its bill, depending on fish size and availability. This ability is critical to chick survival. A hungry puffling must be fed dozens of times daily, so parents make repeated diving trips, each return journey packed with as many sandeels as the beak can manage.
The sandeels themselves are thin, elongated fish typically between 10 and 20 centimetres long. Puffins catch them by diving up to 60 metres underwater and using their wings to propel themselves in pursuit. The efficiency of carrying multiple fish means a parent can deliver a substantial meal in one trip, then return to sea for another hunt. This feeding strategy is so dependent on sandeel availability that poor fish years directly impact how many puffling chicks survive to fledging.
Frantic Wingbeats and Awkward Landings
Puffin wings are built for underwater flight rather than the air. In water, these short, stubby wings beat rapidly, propelling the bird through the ocean with remarkable speed and agility. In the air, the same wings beat frantically, up to 400 times per minute, creating the characteristic whirring sound of a puffin in flight. This rapid wingbeat is necessary because puffin wings generate relatively little lift, making sustained flight an exhausting effort.
The trade-off is visible whenever a puffin approaches land. Watch a bird returning to the cliffs near Lindarbakki and you will see why landing is so difficult for these birds. They approach the rock face at speed but cannot slow down easily, often crashing awkwardly into the turf or tumbling onto the ground in an ungainly heap. Take-off is equally clumsy. A puffin on land must run several paces while flapping frantically just to build enough airspeed for flight. This is why puffins spend most of their day at sea, returning to land only to rest and tend their burrows.
400
A puffin's wings beat up to 400 times per minute, allowing these stocky birds to fly at speeds exceeding 50 mph.
Lifelong Partnerships and Yearly Returns
Puffins are remarkably faithful partners. Most pairs mate for life, returning to the same burrow season after season to breed together. This long-term bonding strengthens the pair's ability to coordinate feeding and chick-rearing duties. When both parents know their burrow location and remember their partner, the effort to excavate a new nest is eliminated, leaving more energy for hunting and raising young.
Each spring, puffins undergo a remarkable migration. They spend the winter scattered across the Atlantic, sometimes ranging thousands of kilometres from their breeding colonies. Yet come March and April, they return to the exact same headland, often to within metres of their previous burrow. This navigational feat, still not fully understood by scientists, allows populations near Seydisfjordur to rebuild their colonies year after year. The consistency of these returns means the landscape you witness on this tour today has hosted puffins for centuries, with individual pairs sometimes occupying the same burrow for 20 years or more.
Puffling Departure: A Night Escape from the Cliff
Pufflin young develop rapidly in their burrows, fed by both parents throughout the summer months. By late August and early September, the young puffin, called a puffling, reaches near adult size. But it remains in the burrow, relying entirely on its parents for food. Then, as summer wanes and the parents' feeding visits become sporadic, the puffling knows instinctively that it is time to leave.
The departure happens under cover of darkness. Young puffins emerge from their burrows at night and scramble toward the cliff edge, following an innate pull toward the ocean they have never seen. They tumble down the rocks or leap into the air, beating their wings frantically as they make their first real flight. Many crash into the surf below, exhausted and disoriented. Over the following weeks, they swim out to sea, beginning their own migration across the Atlantic. They will not return to land for two or three years, and many will never revisit the colony where they were born. This dramatic moment, occurring nightly across the East Iceland headlands in late summer, represents one of nature's most precarious journeys, one that defines the puffling's first minutes of independence.
How Long Wild Puffins Live
Wild puffins are long-lived birds, with lifespans frequently reaching 20 to 30 years. The oldest known wild puffin was banded as a chick and recaptured alive at 38 years old, proving these birds can survive decades of ocean storms, fishing challenges, and predation. Longevity in wild puffins is tied directly to breeding success: pairs that raise multiple chicks survive and return more consistently than those that fail to breed.
A puffin's long lifespan means that individual birds witnessed by tour visitors today may have been breeding here for 15 or 20 years already. Some of the adults you observe on the headlands near Gufufoss may continue returning for another decade or more. This durability of puffin populations, combined with their yearly fidelity to the same burrows and partners, means the Icelandic colonies are remarkably stable if food supplies hold steady. However, climate changes affecting sandeel populations threaten this balance, making the puffins you encounter on this shore excursion from Seydisfjordur indicators of broader ocean health in the North Atlantic.
