Ancient Murrelet
Synthliboramphus antiquus
Small seabird with attractive grayscale pattern. Mostly black head set off by white collar, pencil-thin white streaks which form an eyebrow, and gray back. Sides show a scaly pattern. Short bill has a pale yellow tip. All plumages are fairly similar; breeding birds show bolder eyebrow streaks and darker throat. Breeds on offshore islands; found in small flocks on coastal waters. Dives underwater for fish.
Identification
This small auk species is black on the head, throat and rear neck, grey-backed, and has white underparts. The yellow bill is short and stubby. It has a small rounded black tail. The summer adults have white head streaks giving an aged look and leading to the English name. Other plumages are similar, but lack the crown streaks and black on the throat.<p>Ancient murrelets tend to bank from side to side in flight to a greater extent than other small auks. They fly with fast wing beats due to their short wings.<p>Measurements:
Taxonomy
The ancient murrelet was formally described in 1789 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's Systema Naturae. He placed it with the auks in the genus Alca and coined the binomial name Alca antiqua. Gmelin based his description on the "ancient auk" that had been described in 1785 by both the English ornithologist John Latham and the Welsh naturalist Thomas Pennant. Both authors mention a specimen in the Leverian Museum and give the location as the west of North America, the Kuril Islands and the Kamchatka Peninsula. The ancient murrelet is now one of five species placed in the genus Synthliboramphus that was introduced in 1837 by the German born naturalist Johann Friedrich von Brandt. The genus name combines Ancient Greek sunthlibō meaning "to compress" with rhamphos meaning "bill". The specific epithet antiquus is Latin meaning "ancient".<p>Two subspecies are recognised:
- Scientific name
- Synthliboramphus antiquus
- Authority
- (Gmelin, JF, 1789)
- Order
- Charadriiformes
- Family
- Alcidae
- Genus
- Synthliboramphus
Range and habitat
It breeds from the Yellow Sea (islands off China), through the Russian Pacific coast and the Aleutian Islands to the Haida Gwaii archipelago of British Columbia, where about half of the world population breeds.<p>Some ancient murrelets migrate 8,000 kilometres (5,000 mi) from Canada to winter near Japan and China, even though the climate is similar at the two ends. It is the only bird known to cross the whole North Pacific. They then start a return trip in February, flying four or five hours a day. Genetic evidence shows that the species originated in Asia and only recently colonized North America, so their migration takes them back to their original homeland. In 2007, surveys off the Olympic Peninsula found unprecedented numbers of Ancient Murrelets with chicks, strongly implying local breeding.<p>Other ancient murrelets however fly south in winter as far as California, and odd birds are found inland in North America, carried by autumn storms. The most remarkable record of this relatively short-distance Pacific migrant was a bird found on the island of Lundy, in Devon, England in the spring of 1990. Even more remarkably, what was presumably the same bird returned to this British island for the next two springs as well. In 2021 murrelets were sighted in Finland.
- Breeding range
- PAL, NA : temperate nw to ne North Pacific coasts: patchily Kamchatka, Sea of Okhotsk, Sakhalin, Kuril and Commander is. (e Russia); Sea of Japan and Yellow Sea, Aleutian Is., Gulf of Alaska to w British Columbia (sw Canada)
- Non-breeding range
- to Sea of Japan and sw Pacific coast of Japan, and s California; prone to long-distance vagrancy, s Canada and n USA
- Migration
- Resident species
Behavior
Migration pattern: Resident species.
Conservation
Population trend: declining.
- Population trend
- declining
Photos
Distribution
Bird Calls
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