Shrew skulls shrink for winter survival : Nature News & Comment
▻http://www.nature.com/news/shrew-skulls-shrink-for-winter-survival-1.22874
Lázaro and his colleagues are now investigating which brain structures change most from season to season, and whether the animals experience any cognitive impairments in winter. If they do, it might not matter too much, says Rychlik. “Their winter life is more boring,” he says. “They are less active, less involved in interactions, not busy with reproduction and searching for partners. They are just focused on foraging and saving energy.”