Shiga Kogen in Nagano Prefecture is Japan’s largest highland plateau and one of the best places in the country to find alpine bird species. At elevations above 1,500 metres, the snow-covered grasslands, volcanic lakes, and dwarf birch forest hold species that are impossible to find in lowland Japan.
Star Birds
Japanese Rock Ptarmigan
The Japanese Rock Ptarmigan (Raicho) — one of Japan’s most beloved birds and a symbol of the high mountains — inhabits rocky alpine slopes above the tree line. The plateau around Mt. Shibutsu provides accessible habitat. In winter, the ptarmigan’s snow-white plumage renders it almost invisible against the mountain snow.
Other Alpine Specialists
Japanese Accentor sings from rocky outcrops in summer. Siberian Rubythroat and Bluethroat occur during migration. Large-billed Reed Warbler, Japanese Grosbeak, and Hawfinch inhabit the subalpine forest. Eurasian Nutcracker is resident year-round in the forest zone.
Wetland Birds
The plateau lakes hold Common Goldeneye, Tufted Duck, and Common Pochard in summer. Pied Kingfisher and Crested Kingfisher fish the clear streams below the plateau.
Best Time to Visit
- Early Summer (Jun-Jul): Ptarmigan with chicks; all alpine birds singing
- Autumn (Sep-Oct): Autumn colours spectacular; migratory raptors overhead
- Winter (Jan-Mar): Ptarmigan in white winter plumage; cross-country skiing access
Travel Tips
Shiga Kogen is reached by bus from Nagano Station (about 70 minutes). The ski resort infrastructure makes winter access excellent — gondolas and chairlifts reach alpine elevations efficiently. The Shibu-toge Pass (2,172m) is a productive birding spot accessible by the main road in summer. A telescope is useful for scanning rocky slopes for ptarmigan.
