It appears that “when the situation is risky, then birds will sleep more often with only half their brain, ” says Professor Niels Rattenborg of Indiana State University.
Šķiet, ” kad situācija ir riskanta, putni biežāk guļ tikai ar vienu smadzeņu pusi ”, saka Nilss Retenborgs no Indiānas štata universitātes (ASV).