... so at the cost of a reduced cognitive ability in winter. Dehnel's phenomenon Brain size Seasonal adaptation Spatial cognition Braincase size Learning task Organisms have developed a wide range of strategies to cope with seasonal fluctuations in resources and temperature, using...

...Lara Keicher; M. Teague O'Mara; Christian C. Voigt; Dina K. N. Dechmann ABSTRACT Small non-migratory mammals with Northern distribution ranges apply a variety of behavioural and physiological wintering strategies. A rare energy-saving strategy is Dehnel's phenomenon, involving a reduction and later...