Sooty Shearwater
Sooty Shearwater Ardenna grisea
Common around Japan. Mainly migration visitor. Migration season; Apr-Jul, population increase and hundreds to thousands birds seen E Hokkaido in early summer.
Sooty Shearwater Ardenna grisea
Common around Japan. Mainly migration visitor. Migration season; Apr-Jul, population increase and hundreds to thousands birds seen E Hokkaido in early summer.