Iceland Gull Life Cycle Nest Building To Fledging (and everything in between)

The Iceland Gull (Larus glaucoides) is a captivating white-winged bird known for its graceful appearance and high Arctic origins. 

Interestingly, despite its name, the Iceland Gull does not actually breed in Iceland but instead is a common winter visitor to the country. These gulls travel vast distances, spending their summers breeding in the remote Arctic regions and their winters in milder areas such as the United Kingdom and northeastern United States. 

In this article, we’ll learn more about the life cycle of the Iceland Gull, from its nesting habits to the fledging of its young!

How Long Does An Iceland Gull Live?

Iceland Gulls typically live between 15 to 20 years in the wild. However, some individuals have been known to reach up to 33 years, showcasing their remarkable resilience.

Survival rates are influenced by various factors, including predation, food availability, and environmental conditions. Young gulls face the greatest challenges during their first winter, when they must master the skills needed for independent survival.

The birds that successfully navigate their early years often enjoy relatively long lives, protected by their excellent flying abilities and adaptable feeding habits.

How Fast Can An Iceland Gull Fly?

Iceland Gulls can achieve speeds of 25 to 30 miles per hour (40-48 km/h) during normal flight, though they can fly faster when necessary. They are also skilled at riding air currents, often soaring and gliding effortlessly for extended periods with minimal wing beats.

While not as fast as some other gull species, the Iceland Gull’s flight is characterised by its manoeuvrability. They can quickly adjust their direction and speed to snatch prey from the water’s surface or chase down scraps thrown from fishing boats. This flying agility is crucial for their foraging success.

Are Iceland Gulls Aggressive?

Iceland Gulls are generally not considered an aggressive species, especially compared to some larger gull species. They tend to be relatively peaceful when foraging and usually avoid direct confrontations with other birds.

However, during the breeding season, Iceland Gulls can display some territorial behaviour near their nesting sites. They may vocally threaten or even chase away intruders, including other gulls or potential predators, to protect their eggs and chicks. This defensive aggression is typical for most gull species.

Intraspecific aggression, or just between Iceland Gulls, is minimal, as they often nest in loose colonies with sufficient spacing between pairs. When foraging, they may squabble over a particular food item, but serious fights are uncommon.

What Is An Iceland Gull’s Habitat?

Iceland Gulls breed in the high Arctic regions of Greenland and Arctic Canada, typically choosing coastal cliffs and remote islands for nesting. During winter, they migrate south to coastal areas including Iceland, northern Britain, and the northern United States.

These birds show a strong preference for marine environments, particularly during the non-breeding season. They can be found along coastlines, in harbours, and around fishing ports where food is abundant. Iceland Gulls can also be spotted in fields, parks, and even rubbish dumps scavenging for food.

In the UK, they are winter visitors, typically arriving in November and departing by April. During this time, they can be observed along both eastern and western coasts, though they’re generally less common than other gull species.

How Long Does It Take For An Iceland Gull To Build A Nest?

Iceland Gulls typically take about 1 to 2 weeks to build their nests. Both the male and female participate in nest construction, although the male often takes the lead in bringing nesting materials while the female does more of the arranging.

The nest itself is a simple scrape on the ground, usually on a cliff ledge or rocky outcrop. The birds line the scrape with grass, moss, seaweed, and other soft materials to create a cushioned base for the eggs. 

The amount and types of nesting materials used can vary depending on what’s readily available near the nesting site.

Eggs

The egg-laying phase is a crucial period in the Iceland Gull’s breeding cycle, carefully timed to coincide with optimal Arctic conditions.

When Do Iceland Gulls Lay Eggs?

Iceland Gulls typically lay their eggs in late May to early June, timing their breeding to take advantage of the brief Arctic summer. This timing ensures that chicks will hatch when food availability is at its peak.

The laying period is synchronised with the melting of winter ice and the return of abundant food resources to their breeding grounds. This careful timing is essential for the survival of their offspring.

How Many Eggs Does An Iceland Gull Lay?

An Iceland Gull typically lays 2 to 3 eggs per clutch. This relatively small clutch size is typical for Arctic-breeding birds, allowing parents to invest more energy in each offspring.

The eggs are laid at intervals of approximately 48 hours, though both parents begin incubation as soon as the first egg is laid. This results in asynchronous hatching, which can help ensure at least some chicks survive if food becomes scarce.

What Do Iceland Gull Eggs Look Like?

Iceland Gull eggs are olive-brown to buff in colour, marked with darker spots and blotches. They measure approximately 65 to 70 mm in length and 45 to 48 mm in width.

The eggs’ colouration provides excellent camouflage against their nesting substrate, helping to protect them from predators. The markings can vary significantly between eggs, even within the same clutch.

How Long Do Iceland Gull Eggs Take To Hatch?

Iceland Gull eggs take approximately 25 to 28 days to hatch after the start of incubation.

Both parents share incubation duties, although the female tends to spend more time on the nest than the male. They incubate the eggs by settling over them, using their brood patches to transfer heat to the eggs. 

The parents also periodically turn the eggs, which is crucial for proper embryo development and prevents the embryo from sticking to the shell.

Chicks

Iceland Gull chicks face significant challenges from the moment they hatch, requiring careful parental care to survive in their harsh Arctic environment.

How Many Chicks Does An Iceland Gull Have?

An Iceland Gull pair typically raises 2 to 3 chicks per breeding season. While they may lay up to three eggs, not all chicks always survive to fledging.

The number of successfully raised chicks often depends on food availability and weather conditions during the breeding season. Parents must work tirelessly to provide enough food for their growing offspring.

When Do Iceland Gull Chicks Open Their Eyes?

Iceland Gull chicks open their eyes shortly after hatching, usually within a few hours. Like most gull chicks, they hatch with their eyes already functional, although their vision continues to improve over their first few weeks.

Having their eyes open from the start is important for these semi-precocial chicks. It allows them to be visually aware of their surroundings, to beg for food from their parents, and to react to potential threats. However, in their first days, they still spend much of their time underneath a brooding parent, staying warm and hidden.

When Do Iceland Gull Chicks Fledge?

Iceland Gull chicks typically fledge, or take their first flight, at around 40 to 50 days old. 

This is a relatively rapid development compared to many other bird species, but it’s crucial given the short Arctic summer.

SEE ALSO: Glaucous Gull Vs Iceland Gull: Key Differences Explained

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