Harvest mice are Britain's smallest rodent and one of its most charming but threatened mammals. Their welfare is shaped by agricultural and habitat management decisions.
Harvest mouse welfare is primarily determined by vegetation management decisions. Dense tussocky grass in rough meadow margins, ungrazed reed beds, and mixed wildflower grassland provide both food and shelter. Agricultural intensification that removes these habitats forces harvest mice into smaller patches of suitable habitat where population density increases and food competition intensifies. Combine harvesting destroys nesting females and dependent young. Targeted habitat management - leaving rough grass margins, delaying hay cutting until after breeding - represents a direct welfare improvement for individual harvest mice.