It raises its head and changes its position basically every day, ” explains Professor Raimo Hissa, who has studied the winter sleep of bears for many years at the University of Oulu, in Finland.
Tas turpat vai katru dienu uz brīdi paceļ galvu un maina pozu, ” stāsta profesors Raimo Hissa no Oulu universitātes Somijā, kurš daudzus gadus ir pētījis lāču ziemas miegu.