Possums eat ticks...
why so few ticks in western washington state
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Western Washington has significantly fewer ticks than the East Coast or Midwest due to long, cool, wet winters and its specific ecosystem, which lacks the dense brush and specific mammal populations that ticks thrive on.
View attachment 184630Vancouver Clinic +2
While they are expanding into some brushier lowland areas, their numbers generally remain extremely low.
View attachment 184631The Columbian +1
- Weather Patterns: Ticks are vulnerable to cold and desiccation. Western Washington's heavy, prolonged winter rains and mild, dry summers do not provide the ideal sustained humidity and warmth ticks like.
- Lack of Primary Hosts: The most common ticks in the region (like the western black-legged tick) rely heavily on the western fence lizard as a primary host. Because these lizards contain a protein in their blood that kills the bacteria causing Lyme disease, tick-borne illnesses are exceedingly rare here.
- Vegetation Types: The dense conifer forests and shaded canopy floors of Western Washington differ from the scrubby, tall-grass habitats that host large tick populations in other parts of the country.
View attachment 184632Washington State Department of Health (.gov) +4