Sano Shrine Roller Breeding Ground

Sano Shrine Broad-billed Roller Breeding Ground: A Sacred Sanctuary at the Foot of Kirishima

Tucked into the southwestern reaches of Takaharu Town in Miyazaki Prefecture, the precincts of Sano Shrine (Sano-jinja) hold a remarkable distinction: they were designated in 1934 as a National Natural Monument specifically because of the rare bird that once filled the ancient cedars overhead with flashes of brilliant blue. The Broad-billed Roller, known in Japanese as Bupposo, was once celebrated here in such numbers that local people gave it a special name—"Miyadori," the bird of the shrine. To visit Sano Shrine today is to step into a layered landscape where Japan's foundation myth, centuries-old conifers, and a now-vanishing migratory bird all converge in one sacred grove.

The Bird That Inspired a Designation

The Broad-billed Roller (Eurystomus orientalis) is among Japan's most beautiful summer migrants. About thirty centimeters long, it wears a deep blue-green plumage that shimmers green or blue depending on the angle of the sun, contrasted vividly by a bright crimson bill and matching red feet. When the bird spreads its wings in flight, two pale-white spots flash on its primaries—a signal so distinctive that birdwatchers recognize the species at a glance.

Each year the rollers travel north from Southeast Asia, arriving at their breeding grounds in late April or early May. They favor old shrine and temple groves where ancient trees offer the deep cavities they need for nesting—hollow trunks, woodpecker holes widened by other animals, or natural openings in trees that have stood for centuries. After raising their young through the summer, they depart again in early September for wintering grounds in Java, Sumatra, and beyond.

Sano Shrine's grove of towering cryptomeria cedars provided exactly the kind of habitat the bird requires, and historical records describe the precincts ringing each summer with the rollers' distinctive guttural calls. Among Japan's four nationally designated Broad-billed Roller breeding grounds, Sano Shrine was historically said to host the largest numbers of returning birds.

Why It Was Designated a National Natural Monument

On May 1, 1934, the breeding ground at Sano Shrine was placed under national protection as a Natural Monument under Japan's cultural property protection system. The official designation document notes that while the Broad-billed Roller is widely distributed across East Asia and the South Pacific, it is exceedingly rare within Japan, and that the precincts of Sano Shrine were renowned as a place where the bird annually returned to nest in the hollows of old trees.

The designation was part of a small group of just four such breeding sites recognized nationwide—the others being Suhara Shrine in Gifu Prefecture, the Mitake area in Nagano Prefecture, and Minobu in Yamanashi Prefecture. Together they formed a kind of national network of protected groves, each centered on a religious site whose ancient trees the bird had chosen as its summer home. The cultural significance went beyond ornithology: protecting the bird meant protecting the sacred grove that sheltered it, weaving conservation tightly together with the spiritual landscape of the shrine.

The Famous Case of Mistaken Identity

One of the most charming chapters in Japanese natural history involves this very bird. For centuries, the call heard echoing through forested mountains at night—a clear, three-syllable "bup-po-so"—was believed to be the voice of this magnificent blue bird. Because the syllables matched the Buddhist Three Treasures (the Buddha, the Dharma, and the Sangha), the bird was considered sacred and inspired countless poems and legends across more than a thousand years.

Yet the truth proved surprising. In June 1935, just one year after Sano Shrine's grove was designated, NHK Nagoya broadcast the call live from Mount Horaiji in Aichi Prefecture. A listener in Tokyo recognized it as the cry of his pet bird—an Oriental Scops Owl. The mystery was finally solved: the bell-like nighttime call belonged to the small nocturnal owl, not to the colorful daytime roller, whose own voice is in fact a rough, crow-like rasp. From that moment on, the two birds were distinguished as the "Roller of Voice" (the owl) and the "Roller of Form" (the true Broad-billed Roller). It is the latter, the dazzling blue daytime visitor, that the Sano Shrine grove was designated to protect.

The Shrine That Holds the Grove

The heritage cannot be separated from the shrine that anchors it. Sano Shrine traces its origins to the reign of Emperor Kosho, the fifth legendary sovereign of Japan, and tradition holds that it was founded at the very birthplace of Emperor Jimmu, the nation's first emperor. The name "Sano" derives from Jimmu's childhood name, Sano-no-mikoto, and the surrounding landscape is rich with place names tied to his legendary infancy.

The shrine has weathered repeated catastrophes from nearby Mount Kirishima. After being destroyed by the great eruption of 1234, it was relocated several times before being rebuilt at its present site in 1610 by order of the Shimazu lord Iehisa. It is counted among the Kirishima Roku-sho-Gongen, the six historic shrines of the Kirishima volcanic region, and remains an important center of Shinto worship today.

Highlights for Visitors

The Cedar Avenue: One of Japan's Longest Straight Approaches

Visitors approach the shrine through what is said to be the longest straight shrine approach in Japan—a roughly one-kilometer path lined with cryptomeria cedars believed to have been planted in 1599 by the Shimazu lord Yoshihiro. These trees, around four hundred years old, reach more than sixty meters into the sky, with trunks nine meters around. The cedar avenue itself is also a designated National Natural Monument, recognized in 1924, and walking beneath the dim green canopy is an experience travelers often describe as physically calming and spiritually purifying.

The Atmosphere of the Precincts

Once visitors reach the inner grounds, the contrast between the towering trees and the modest, weathered buildings creates a deep sense of stillness. The air feels noticeably cooler. Worshippers come here for blessings related to safe childbirth, longevity, traffic safety, and the protection of children—reflecting the shrine's deep ties to Emperor Jimmu's legendary infancy.

Sano Kagura

For those who can time their visit accordingly, the Sano Kagura sacred dance is performed from the night of the first Saturday of December through the dawn of Sunday. Designated as an Important Intangible Folk Cultural Property of Japan under the broader name "Takaharu no Kanme," this overnight ritual has been transmitted for more than five hundred years.

Naoshiroda-sai (Bebu ga Hahō)

On February 18 each year, the shrine hosts an unusual planting ritual that reenacts the symbolic preparation of a rice paddy. The ceremony is famous for its humorous moments and for engaging the audience directly—a designated Intangible Folk Cultural Property of Miyazaki Prefecture.

The Honest Reality Today

Visitors should know that, as at all four of Japan's designated Broad-billed Roller breeding grounds, the bird itself can no longer be reliably observed at Sano Shrine. Across Japan, the species declined sharply through the latter twentieth century as old-growth groves shrank, road traffic increased near shrine forests, and natural tree cavities became scarce. The Ministry of the Environment now lists the Broad-billed Roller as a threatened species.

Yet the designation remains deeply meaningful. It preserves the historical memory of a place where a beautiful migratory bird and a sacred grove sustained one another for generations, and it stands as testimony to a moment in Japanese history when the protection of a single bird species was understood to be inseparable from the protection of a living cultural landscape. For travelers interested in the intersection of nature, spirituality, and conservation history, the shrine is profoundly evocative.

Surrounding Attractions

The breeding ground sits at the heart of one of southern Kyushu's most rewarding travel regions. To the west lies Ouji-baru, identified by tradition as the very birthplace of Emperor Jimmu, where a small auxiliary shrine and a sacred birthing stone are revered. The other Kirishima Six Shrines—including the magnificent Kirishima Jingu—can be visited in a single day's tour, offering a deep immersion in the volcanic landscape's spiritual heritage.

Outdoor travelers can climb Mount Takachiho-no-mine, the legendary site where the imperial ancestor descended to earth, or relax in the natural hot springs of Ouji-baru Onsen. The Saimotsu spring waters are renowned for their clarity, and the Kyushu Nature Trail passes through the area for those who enjoy long walks.