chakwahli
No worry. If you are in Kushiro, it is not far to Ransu (blakiston Fish owl) in the peninsular and Lake Furen (waterbirds)in Nemuro. It is about 2-hr drive from Kushiro. Don't waste your holiday. Pls get the contact of Matsuo san in Nemuro. He runs a B&B. He could also help to book accommodation at Ransu.
Good luck
Captain