title: Letter: Photoperiodism and adaptive behaviour in a small mammal.
mesh_terms: D000222:Adaptation, Physiological; D000818:Animals; D001522:Behavior, Animal; D003259:Consummatory Behavior; D003624:Darkness; D005247:Feeding Behavior; D008027:Light; D051379:Mice; D009425:Nesting Behavior; D012621:Seasons; D013696:Temperature