Thick-billed Murre
Birds diurnal

Thick-billed Murre

Uria lomvia

Rugged, resilient, and built for the deep, the Thick-billed Murre is the Arctic's answer to the penguin. These tuxedo-clad divers spend their lives braving the icy northern seas, returning to land only to perform gravity-defying nesting feats on the world's most precarious cliffs.

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Quick Identification

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Size

Length of 40-48 cm (16-19 in), wingspan of 64-81 cm (25-32 in), and weight between 730-1,480 g (1.6-3.3 lbs).

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Colors

Solid black head, neck, and back with a sharp transition to a pure white belly. Adults in breeding season feature a distinctive white line along the cutting edge of the upper bill.

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Key Features

  • Sharp, pointed bill with a prominent white horizontal line at the base
  • Deep charcoal-black upperparts contrasting sharply with white underparts
  • Stocky, upright posture similar to a penguin when on land
  • Pointed tail and short, rapid wingbeats in flight

When You’ll See Them

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Activity pattern diurnal
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Peak hours 6 AM - 8 PM
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Season May-August (Breeding season at colonies)
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Diet A carnivorous pursuit-diver that feeds on small schooling fish (like Arctic cod and capelin), squid, and large zooplankton/crustaceans.
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Habitat Pelagic (open ocean) waters during winter; steep, rocky coastal cliffs and offshore islands for breeding.

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Behavior

The Thick-billed Murre is a master of the deep, often referred to as the 'penguin of the north.' Unlike penguins, however, these birds are strong fliers, though they require a running start over water to get airborne. They are highly social, nesting in massive, noisy colonies that can number in the hundreds of thousands. On the cliffs, they are packed tightly together, often standing shoulder-to-shoulder on narrow ledges where they lay a single, pear-shaped egg designed to spin in a circle rather than roll off the edge.

Foraging is where the Thick-billed Murre truly shines. They are pursuit-divers, using their wings like flippers to 'fly' underwater to depths exceeding 100 meters (330 feet) in search of prey. While they are generally wary of humans at sea, they can be remarkably tolerant at their nesting sites, allowing researchers and coastal observers to witness their complex social displays and vocalizations, which range from guttural growls to soft purring.

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Camera Tips

Capturing the Thick-billed Murre on camera requires a strategic approach since they are rarely found in traditional 'backyards' unless you live on a rugged coastline. If you have a coastal property or access to a cliffside overlook, position your camera on a stable tripod or a secure rock mount facing the narrow ledges where birds congregate. Because of the high-contrast 'tuxedo' plumage, use a camera with a high dynamic range to avoid blowing out the white feathers in direct sunlight. A slightly underexposed setting is often safer than overexposing.

For those using trail cameras near colonies, timing is everything. The most dramatic footage occurs during 'the leap,' which usually happens in late July or August. This is when the three-week-old chicks, who cannot yet fly, jump from the high cliffs into the ocean to join their fathers. Set your camera to 'Burst Mode' or high-frame-rate video (60fps or higher) to capture this fast-moving action. Since these environments are often misty or sprayed with salt, a high-quality weather-sealed housing or a protective 'rain coat' for your camera is essential to prevent lens fogging and corrosion.

Because these birds are active throughout the long Arctic summer days, you can capture great footage at almost any hour. However, the 'golden hours' of early morning and late evening provide a softer light that highlights the subtle white line on their bill, which is their most defining feature. Avoid using flash, as it can startle nesting birds; instead, rely on the natural ambient light of the coastal environment. If you are setting up a remote camera, ensure it is anchored heavily, as cliffside winds can be powerful enough to knock over standard tripod setups.

Frequently Asked Questions

Thick-billed Murre are primarily diurnal, meaning they are most active during daylight hours. In their northern breeding grounds during the summer, they take advantage of the long hours of daylight to forage for fish and tend to their chicks, with peak activity often seen during the early morning and late afternoon.
Unlike songbirds, Thick-billed Murre cannot be attracted with bird feeders or baths. They are strictly marine birds. To see them, you must be near the ocean, particularly around rocky cliffs in the North Atlantic or North Pacific. The best way to 'attract' them to a camera lens is to find a known nesting colony during the summer months.
They have a varied marine diet consisting of small forage fish like Arctic cod, sand lance, and capelin. They also consume significant amounts of crustaceans, such as shrimp and amphipods, and small squid, which they catch by diving deep into the water column.
No, they are almost never found in suburban areas. They are pelagic birds that spend most of their lives at sea or on remote cliffs. Occasionally, during severe winter storms (known as 'wrecks'), individual birds may be blown inland or show up in suburban harbors, but this is an emergency situation for the bird and not a normal occurrence.
The easiest way to tell them apart is the bill. The Thick-billed Murre has a shorter, thicker bill with a prominent white line along the edge of the upper mandible. Additionally, the Thick-billed Murre usually has a darker, more jet-black head compared to the slightly browner tone of the Common Murre.

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