Wild Moose Welfare and Tick Burden

Moose across northeastern North America are dying from unprecedented winter tick infestations. Climate-driven changes in tick survival are creating a welfare and population crisis for moose.

Key Facts

Individual moose can carry 50,000-100,000 winter ticks, causing severe anemia and hair loss
Moose calves are most vulnerable, with mortality rates from tick infestation reaching 70% in some areas
Warmer autumns allow more tick larvae to attach to moose before winter, worsening infestation severity
Moose rubbing to remove ticks lose winter insulating coat, compounding cold stress with parasite burden
Moose populations in New England have declined by 40% or more in areas with high tick mortality

Welfare Considerations

Moose tick welfare represents one of the clearest examples of how climate change translates into individual animal suffering at scale. A moose carrying 100,000 ticks is losing blood continuously, developing severe anemia that causes lethargy and reduced foraging. The moose rubs obsessively to remove ticks, losing patches of winter coat needed for insulation. Ghost moose — white from hair loss — are visible indicators of severe infestation. Calves born to nutritionally depleted mothers start life already compromised. There are no practical interventions for wild moose tick infestations; the welfare solution is climate mitigation that prevents the mild autumns allowing tick population explosions. This makes moose tick welfare a direct argument for urgent climate action.

What You Can Do

Support climate action as the primary welfare intervention for tick-burdened moose populations
Donate to moose population monitoring programs tracking tick burden impacts over time
Learn about climate-wildlife welfare connections illustrated by moose tick dynamics
Advocate for forest management that maintains diverse habitat for moose populations