Reasons Why Teuri Island Became a Sanctuary for Seabirds

Teuri Island is a small island with a circumference of about 12 km, and as of 2024, it has a population of approximately 250 people. Despite its size, Teuri Island is considered a “paradise for seabirds,” with an estimated breeding population of around one million birds. Such a sanctuary for seabirds is unique within Japan, as even the neighboring Yagishiri Island, which is about 3 km to the east and of similar size, lacks a significant seabird population.

The reason behind this phenomenon can be attributed to the maritime climate around Teuri Island, particularly during winter when it is influenced by the Siberian high-pressure system from the continent. As a result, the island is continuously exposed to northwestern winds. Over millions of years, these prevailing winds have shaped the landscape, forming cliffs predominantly on one side of the island.

from Google Map

The red lines indicate the original location of the island.

from Google Map

The arrows indicate the direction of the wind. Cliffs were formed on the northwest part of the island where the wind directly hits.

Cliffs, which are among the most challenging terrains for mammals, including humans, become easily accessible for birds capable of flying. Consequently, seabirds, which primarily reside at sea, are not well-adapted to terrestrial life, leading them to choose cliff habitats for breeding where their predators find it difficult to access.

The slaty-backed gull, which breeds on cliffs.

The pelagic cormorant and the black-tailed gull, which breed on cliffs.

The most abundant breeding location for rhinoceros auklets on Teuri Island is on land with soil situated atop the cliffs. Rhinoceros auklets choose to nest on land, despite the presence of many predators, as it becomes harder for predators to spot them during the evening twilight when they return to their nests all at once at sunset. If there were tall trees around the nesting area, they would be at a higher risk of colliding with them in the dark. Therefore, they prefer nesting in areas without tall trees.

Thanks to the island’s strong winds, which prevent the growth of tall trees, Teuri Island provides the ideal conditions for rhinoceros auklets. They have a habitat where approximately 400,000 breeding pairs thrive, making it the world’s No. 1 breeding site for these birds.

Rhinoceros auklets return to their nests by diving into treeless grasslands.

In this way, a miraculous convergence of ideal conditions for seabirds has resulted in the creation of Teuri Island, where numerous seabirds breed. During the seabird breeding season, boat tours are also available, allowing visitors to observe seabirds and geological formations from beneath the cliffs.

Photo & text : Wataru HIMENO

★ Visit our web site of  TEURI ISLAND.

Contact us to make arrangements for photographing seabirds on Teuri Island and Wildlife of Japan.

★Wildlife videos are also available on Youtube – we have the playlist as well.

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Shiretoko Peninsula: Red Foxes Born at the Fisherman’s Hut (Banya)

We met a family of Red Fox in Rausu during the spring months, when the temperatures had not yet risen to double digits yet.

The three red fox kits lived under the floor of a building called ‘Banya’, which is a hut used by the sea fishermen.

I met these kids when they were less than two weeks old, and they still couldn’t see very well. The parents were frequently grooming them, to remove the dirt from their fur.

After observing them for a few days, I could get to know their daily schedule, and the relationships between the three siblings.

The third kit, which is a little smaller, was often seen dozing off or behaving a little differently then the other two. Every morning, when the time came for the fishermen to return to the port, the parent fox would also go to the port to get the fish from the fishermen.

Red Fox cub
Red Fox cub
Red Fox cub

Every year, from May to June in Rausu, it is not uncommon to find baby foxes coming out suddenly from under the floor of the huts, jump out onto the road, or sadly even get hit by a car in the road. During this season in Eastern Hokkaido, animals such as deer and fox are raising their families, so there is a need to be extra careful when driving.

Photo & Text: Kaito IMAHORI
Observation:  Rausu, Shireoko Peninsula, Hokkaido

*Contact  us, Saiyu Travel for more information about wildlife and bird watching in Hokkaido. We can make various arrangements for your trip. We have a guesthouse, Shiretoko Serai, in Rausu, Shiretoko Peninsula.

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Ezo Chipmunks Preparing for Winter

You might have a chance to encounter the small animals in the parks and shrines while vising the Eastern Hokkaido area.

Among them are the chipmunks, which hibernate through the winter. They will use the entire park in the autumn months to collect food for their winter storage. They may carry many kinds of food back to their nests such as yew nuts, walnuts, acorns, and mushrooms.

The Ezo Chipmunk, Tamias sibiricus lineatus, is a subspecies of chipmunk that is distributed throughout Hokkaido, its surrounding islands, and the islands of the Northern Territories.

Its body is about 15 centimeters long, a similar size as a mouse; and its footsteps are hard to hear, so it is often not noticed. Hokkaido is home to two small species: the Ezo squirrels and the Ezo chipmunks. The biggest difference is that Ezo chipmunks hibernate, but Ezo squirrels do not hibernate.

Ezo squirrels build their nests at the tops of tall trees, and basically live in the canopy. Ezo chipmunks, on the other hand, build burrows at the base of trees and hibernate, so their home range is largely on the ground level.

Ezo squirrels are also longer than Ezo chipmunks, with the squirrel’s tail alone, measuring about 15 centimeters.

Ezo squirrels can be observed throughout the year, but the Ezo chipmunks are easier to find from September to October, which is the busy pre-hibernation feeding season for them.

 

Photography & text: Shohei Morita
Observation: Sep 2022, Eastern Hokkaido Region

*Contact  us, Saiyu Travel for more information about wildlife and bird watching in Hokkaido. We can make various arrangements for your trip. We have a guesthouse, Shiretoko Serai, in Rausu, Shiretoko Peninsula.

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<Red-crowned Crane> Report for FEB, 2023 Eastern Hokkaido Wildlife Tour in the Winter

For 6 days from February 17、I traveled to Eastern Hokkaido. This article introduces the Red-crowned Cranes in the village of Tsurui.

Over the course of two days, I visited Otowa -bashi, a famous spot for observing the roosting cranes. On the first day, it snowed and the lowest temperature that morning was about -6℃. It was forecasted to have an ice-fog at below 15 degrees Celsius. Perhaps due to these bad weather conditions, when we arrived at the bridge at 4am, there were only 3 tripods lined up when we arrived. After 5:30am, the sky brightened and the cranes began to appear even though it was still snowing, and we were able to see them at a short distance away, only about 50 m from the bridge.

From snowy Otowa Bridge
Photographer waiting at Otowa Bridge

On the second day, the lowest temperature was minus 15℃, and when we arrived at 4am, there were already 30 tripods lined up, and in the end, there were so many people crowding to see the cranes, that we had to form two lines for the tripods. The red-crowned cranes were several hundred meters away, because it was sunny, but the morning glow was a golden hue, coloring the crane’s roosting area, making it a very magical sight.

Scenery from Otowa Bridge in the morning sun
Otowa Bridge is full of photographers

At the Ito Sanctuary, which is the feeding ground for them during the winter, many people had already reserved their photo-taking positions from an hour beforehand. On the first day, perhaps because the wind was really strong, the cranes flew from behind us observers, passing directly above us. Even the photographers with the big camera lenses, were using their cell phones to shoot cause the distance was too close. Also, due to the snow, the ground was covered with a fresh coat of snow, making their courtship displays very elegant and fantastic.

Flight of the red-crowned crane
Red-crowned cranes take off in flight
Courtship of red-crowned cranes

On our second day, there were so many people gathered there from an hour before the feeding time. This time, in the parking area of Ito Sanctuary, there were people who had gotten stuck in the snow, causing lots of confusion in the parking lot. Driving in eastern Hokkaido takes some getting used to, so if you do drive yourself, please be careful not to waste precious photography time and get there early. On this day, it was a particularly beautiful day to observe cranes flying in with the clear blue skies as the backdrop.

The bright blue sky and the red-crowned crane
Red-crowned cranes coming to Ito Sanctuary
Active red-crowned crane movements
People gathered at Ito Sanctuary

Then, at noon, we took a break at the shop that has bird feeders out for the Long-tailed tits “Shimaenaga.” Tourists are there eating the pasta flavored with locally grown basil and Hokkaido’s famous ice cream while observing the small long-tailed tits that were attracted by the birdfeeders.

Observing long-tailed tits from a cafe
Pasta using local basil

In the evening, we observed the cranes going to roost. Due to the fact that they all return at once from the feeding site to the roost, we waited for the photo opportunity by waiting along the route. Over the 2 days, we saw a large number of cranes flying overhead. On the second day in particular, the sunset was a beautiful hue, so many people were able to get photos with a magical atmosphere.

Red-crowned crane in the evening light
Red-crowned cranes on its way to the roost
Red-crowned cranes on its way to the roost

Photo & Text: Wataru HIMENO
Observation: Tsurui Village, East-Hokkaido

*Contact  us, Saiyu Travel for more information about wildlife and bird watching in Hokkaido. We can make various arrangements for your trip. We have a guesthouse, Shiretoko Serai, in Rausu, Shiretoko Peninsula.

*Youtube : Wildlife of Japan

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Ezo Sika Deer of the Notsuke Peninsula in Winter

Ezo sika deer with the Shiretoko mountain range in the background

The Notsuke Peninsula in the winter has many charms.
One of them was an encounter with the Ezo sika deer, Cervus nippon yesoensis. In the winter, the heavy snowfall causes the deer to face food shortages. The flat Notsuke Peninsula, which juts out into the Nemuro Strait, is well-ventilated with relatively little snowfall, making it a great feeding ground for the Ezo sika deer. Therefore, in winter, you can encounter hundreds of Ezo sika deer all at once.

A group of female Ezo sika deer
Male Ezo sika deer

The Notsuke Peninsula is also designated as a wildlife sanctuary, so the Ezo sika deer are not weary of people, therefore close range photography is possible.

In addition, you can see the Shiretoko mountain range and Kunashir Island from the Notsuke Peninsula in good weather. If the visibility is good, you can also see the Akan volcanic complex and Mt. Kamui (also Mt. Mashu). The sun rises behind Kunashir in the morning and then sets on the frozen icy side in the evening, making it an attractive location for photography throughout the day.

View of Kunashir Island (the Northern Territories) in the background

This is located only an hour (one-way) from Shiretoko, Rausu, so it is possible to visit on a day trip, perhaps after an early morning drift ice cruise.

Photo & text: Shohei MORITA (Shiretoko Serai)

*Contact  us, Saiyu Travel for more information about wildlife and bird watching in Hokkaido. We can make various arrangements for your trip. We have a guesthouse, Shiretoko Serai, in Rausu, Shiretoko Peninsula.

 

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Ezo Red Fox in Winter

The Ezo red foxes live all over Hokkaido island. Officially a subspecies of the red fox, Vulpes vulpes schrencki, they inhabit the islands of Hokkaido, Sakhalin and the Southern Kuril Islands.

For those of us who live in Hokkaido, they are a familiar face that we often see in the city. However, people should be careful not to get close to them because they are hosts to a parasite called Echinococcus. Echinococcus (a type of tapeworm) is said to have spread to Hokkaido through fur fox farming in the Aleutian Islands and Kuril Islands. Sadly, the Ezo red fox has become the definitive host of the parasite Echinococcus. There are programs for delivering anthelmintic drugs to the fox population to reduce the infection rate.

A pair of Ezo red foxes during the breeding season (Notsuke Peninsula).
A pair of Ezo red foxes during the breeding season (Notsuke Peninsula).

During the summer, Ezo red foxes don’t look very beautiful because their fur sheds unevenly. Unlike the Japanese red foxes of mainland Japan (a subspecies of the red fox, Vulpes vulpes japonica), the Ezo red fox, Vulpes vulpes schrencki, which inhabits Hokkaido, north of the Blakiston’s line, has fluffy winter fur and gives it that beautiful look.

The bushy fur covers the Ezo red fox

Also, the whiteness of the snow makes their brown fur stand out. Especially from February to March, during their breeding season, they are often seen in pairs. If you are lucky, you may see them chasing each other playfully, or mating in the forest.

A couple of playful Ezo red foxes.
A couple of playful Ezo red foxes.
A couple of playful Ezo red foxes.

Photo & text: Shohei MORITA (Shiretoko Serai)

*Contact  us, Saiyu Travel for more information about wildlife and bird watching in Hokkaido. We can make various arrangements for your trip. We have a guesthouse, Shiretoko Serai, in Rausu, Shiretoko Peninsula.

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Sea Otters of Eastern Hokkaido

The wild sea otters in Japan, can only be found breeding in the eastern part of Hokkaido. The species that live in this northern coast of Japan are the subspecies Enhydra lutris lutris which uses the Commander and Kuril Islands of Russia. They were overharvested in Japan for their fur in Japan and was once thought to be extinct by the early 20th century, but since the 1980’s they were found to be breeding on the coast and near the islands around Nemuro.

Currently, they can sometimes be observed along the coastline of eastern Hokkaido and around the fishing ports year around, regardless of the season. Around June of every year, you might see the adorable sight of the parents carrying their pups on their bellies.

Sea otters have a very thick layer of fur that has a special adaptation to trap air in between their hairs, which allows them to float all day long with no effort. During the day, they repeatedly dive down and then surface to eat seafood on their stomachs while floating. At night, they will wrap kelp around their bodies to keep from being carried away on the currents while they sleep.

These adorable sea otters actually have many problems due to human activities, so coexistence is a constant challenge for them. Since sea otters in eastern Hokkaido eat sea urchins and northern mussels, fishermen have raised various concerns about the damage they cause to the fishing industry.

Current estimates of sea otter populations say a little more than 12 otters live in the area. Fisheries representatives are looking for ways to balance sea otter conservation and fisheries.

Photography & text: Shohei MORITA (Shiretoko Serai)

*Contact  us, Saiyu Travel for more information about wildlife and bird watching in Hokkaido. We can make various arrangements for your trip. We have a guesthouse, Shiretoko Serai, in Rausu, Shiretoko Peninsula.

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The Snow Fairy: Hokkaido’s Long-tailed Tit

Hokkaido’s Long-tailed tit (A. c. japonicus)

The Long-tailed tit in Hokkaido is Aegithalos caudatus japonicus, a sub-species of the Long-tailed tits found on Honshu. Unlike the tits of the mainland, the Hokkaido tits do not have thick black eyebrows, so their faces are all white.

Youtube : Long-tailed tit

Hokkaido’s Long-tailed tit (A. c. japonicus)

With a white face like a snowball, a small beak, round eyes, and yellow eyelids, the Hokkaido long-tailed tits are called “snow fairies” because they are so cute in their appearance. It became quite popular when it was featured in Japanese animation (anime) and comics (manga), and a variety of souvenir goods. They can be observed all year around in Hokkaido, but in the cold winter months, they will puff out their feathers to stay warm. Many wild bird photographers are aiming to capture them in that cute, round shape.

Hokkaido’s Long-tailed tit (A. c. japonicus)
Hokkaido’s Long-tailed tit (A. c. japonicus)
Hokkaido’s Long-tailed tit (A. c. japonicus)

From mid-February to early March, once the bitter cold starts to loosen its grip, the parts of the trees that are damaged will start to drip out sap, which freezes into sweet icicles. Small birds, such as the Long-tailed tits, can be seen hovering around the trees, licking the sap as a precious source of sugars in their bodies.

Hokkaido’s Long-tailed tit (A. c. japonicus)

Photograhy & text : Kaito IMAHORI (Shiretoko Serai)

*Contact us, Saiyu Travel for more information about wildlife and bird watching in Hokkaido. We can make various arrangements for your trip. We have our guesthouse Shiretoko Serai in Rausu on the Shiretoko Peninsula.

Please see other article from Kaito IMAHORI about Wildlife of Hokkaido

Rausu : Where the Killer Whales Gather

Blakiston’s fish owl that lives in the forest of Shiretoko

Experiencing Autumn From the Notsuke Peninsula to Tokachi Plain: Seeing Flocks of Snow Geese, Brandt, and Pika (Part 1)

Experiencing Autumn From the Notsuke Peninsula to Tokachi Plain: Seeing Flocks of Snow Geese, Brandt, and Pika (Part 2)

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Winter in Hokkaido:The Season of Love for the Ural Owl

Hokkaido’s Ural Owl(Strix uralensis japonica)

In Hokkaido you can find 10 out of the 11 species of owls that live in Japan, making it an owl sanctuary of sorts. There are two species that are especially sought after by birders, the Ural Owls and the Blakiston’s Fish Owls.

The Blakiston’s Fish Owl lives in only a limited number of places in the northeastern part of the Eurasian continent, and due to that, many birders come from around the world for a chance to see them in the wild.
The Ural Owls are more widely distributed in northern Eurasia – from Scandinavia to East Asia. Although it is a common pet species, the subspecies that lives in Hokkaido, Strix uralensis japonica, is particularly lovely in appearance, with whiter feathers compared to their cousins elsewhere. For this reason, they are often pursued by bird watchers in Japan and beyond.

Hokkaido’s Ural owl (Strix uralensis japonica)
Hokkaido’s Ural Owl(Strix uralensis japonica)

From January to March, the courtship activities of the Ural Owl can be observed. Especially in February, when the mating is at its peak, you will often see the pairs cuddling. They will often preen each other’s wings and feathers, sticking close together. This is often referred to as a symbol of happiness.

A pair of Hokkaido’s Ural Owl(Strix uralensis japonica)

 

Photography & text : Kaito IMAHORI (Shiretoko Serai)

*Contact us, Saiyu Travel for more information about wildlife and bird watching in Hokkaido. We can make various arrangements for your trip. We have our guesthouse Shiretoko Serai in Rausu on the Shiretoko Peninsula.

Please see other article from Kaito IMAHORI about Wildlife of Hokkaido

Rausu : Where the Killer Whales Gather

Blakiston’s fish owl that lives in the forest of Shiretoko

Experiencing Autumn From the Notsuke Peninsula to Tokachi Plain: Seeing Flocks of Snow Geese, Brandt, and Pika (Part 1)

Experiencing Autumn From the Notsuke Peninsula to Tokachi Plain: Seeing Flocks of Snow Geese, Brandt, and Pika (Part 2)

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Steller’s Sea Eagles and the White-tailed Eagles Living in the Drift Ice in the Sea

White-tailed eagle, at fishing port in Rausu

This year (2022), many Steller’s sea eagles and white-tailed eagles have come to Shiretoko and Rausu to pass the winter. This year, about 300 Steller’s sea eagles and about 120 white-tailed eagles, made a total of 420 birds that were observed at one time.

White-tailed eagle at fishing port in Rausu
Steller’s sea eagle
White-tailed eagle in action
Steller’s sea eagle on the drift ice

Rausu has long been used by many eagles during the winter months. A big reason for that is the fishing industry. In winter, cod fishing reaches its peak in the Nemuro Strait between Rausu and Kunashir Island. Until 30-40 years ago, Rausu accounted for nearly half of all Hokkaido catches, with 110,000 tons of fish being caught in 1989, the catch was the highest. At that time, the ships were overflowing with fish, and the eagles were busy eating them. Today the harvest has decreased to about 10,000 tons a year, so the fish no longer overflow from the boats. Now, the tourist boats serve the role that the fishing vessels once did, giving them the fish to eat to help the Eagles survive the winter.

Steller’s Sea Eagles and White-tailed Eagles gathered around the tourist boats.
White-tailed eagle on the drift ice
White-tailed eagle on the drift ice
Steller’s sea eagle on the drift ice

Photography & text : Kaito IMAHORI (Shiretoko Serai)

*Contact us, Saiyu Travel for more information about wildlife and bird watching in Hokkaido. We can make various arrangements for your trip. We have our guesthouse Shiretoko Serai in Rausu on the Shiretoko Peninsula.

Please see other article from Kaito IMAHORI about Wildlife of Hokkaido

Rausu : Where the Killer Whales Gather

Blakiston’s fish owl that lives in the forest of Shiretoko

Experiencing Autumn From the Notsuke Peninsula to Tokachi Plain: Seeing Flocks of Snow Geese, Brandt, and Pika (Part 1)

Experiencing Autumn From the Notsuke Peninsula to Tokachi Plain: Seeing Flocks of Snow Geese, Brandt, and Pika (Part 2)

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