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  3. Marbled Murrelet
Marbled Murrelet (Brachyramphus marmoratus)

Birds · Charadriiformes · Alcidae

Marbled Murrelet

Brachyramphus marmoratus

Endangered

At very high risk of extinction in the wild in the near future.

Spotted something wrong?

The marbled murrelet is a small auk of the North Pacific with an extraordinary life history: it feeds at sea but nests inside old-growth conifer forests, on a thick moss-covered branch of a centuries-old fir or redwood, sometimes eighty kilometres from the coast. Its nest was not discovered until 1974, which made it an ornithological mystery for almost two centuries.

Weight

190 g – 270 g

Size

24 cm – 25 cm

Life expectancy

12 years

Diet

Carnivore

Feeds mainly on other animals.

Activity

Crepuscular

Active mainly at dawn and dusk.

Social structure

In pairs

Usually lives in pairs, sometimes for life.

Sighting difficulty

Hard

Temperate forestOcean
3countries11parks7same family

AI-generated images: illustrations, not photographs.

Fun facts

  • Its nest was one of the great puzzles of North American ornithology: the species had been known since 1789 and the first nest was not found until 1974, when a worker pruning a Douglas fir in California discovered a chick on a mossy branch forty-five metres up.
  • Its conservation puts it in direct conflict with the timber industry: it depends on old-growth forest with thick, mossy branches, which only exists in stands centuries old.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (bird)
Habitat and environment
Coastal waters of the North Pacific; nests on mossy branches of old conifers up to 80 km inland
Sexual maturity
2 years
Gestation / incubation
30 days of incubation
Litter / clutch size
1 egg

Sources consulted: https://es.wikipedia.org/wiki/Brachyramphus_marmoratus

Where to find it

Loading map…

The pins mark the parks where its presence is documented.

Where to see it

Parks and dive sites where this species has been documented — showing 10 of 11.

Related species

Other species in the catalogue with the most in common with Marbled Murrelet — same habitat, park, country, tags or family.

Same taxonomic family
Same taxonomic family
Same taxonomic family
Same taxonomic family
Shares a park
Shares a park

How to help

The marbled murrelet is classified as endangered. Organisations such as the IUCN, WWF and the Wildlife Conservation Society work specifically on its conservation and that of its habitat; looking into their programmes is a good starting point if you want to get involved.

It's documented in 7 protected areas — one reason why protecting these places matters for its conservation.

Keep exploring

Based on what we already know about marbled murrelet.

Comments

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See full glossary
This page in other languages: Español · Deutsch · Français · Português · Italiano
See its range on the interactive map→
RedwoodUnited States
OlympicUnited States
Glacier BayUnited States
Pacific RimCanada
Gwaii HaanasCanada
North CascadesUnited States
KatmaiUnited States
Point ReyesUnited States
Gulf IslandsCanada
Kenai FjordsUnited States
See all 11 parks
Ancient MurreletLeast Concern

Ancient Murrelet

Synthliboramphus antiquus

Vulnerable

Scripps's Murrelet

Synthliboramphus scrippsi

Common MurreLeast Concern

Common Murre

Uria aalge

Least Concern

Horned Puffin

Fratercula corniculata

Sea OtterEndangered

Sea Otter

Enhydra lutris

Killer WhaleEndangered

Killer Whale

Orcinus orca

CountriesUnited States
ParksRedwoodUnited States
TagsCarnivore
Carnivore
Crepuscular
In pairs
Endangered
Bird
Temperate forest
Ocean
United States
Canada
Russia