Snowshoe Hare Populations in 1865: No Evidence of a Boom

There is no historical or ecological evidence indicating an unusually high snowshoe hare (Lepus americanus) population in 1865.

What We Know About Hare Cycles

• 10-Year Cycles: Snowshoe hare populations famously fluctuate in 8–11 year cycles across boreal North America, driven by predator-prey dynamics (especially Canada lynx), food availability, and stress physiology.
• Historical Records: Fur trade records (Hudson's Bay Company) provide the longest dataset, showing peaks roughly every decade—but 1865 does not align with a documented peak year in most regions.
• Regional Variability: Cycles are not perfectly synchronized continent-wide; a peak in Yukon may not match one in Newfoundland or Minnesota.

Why 1865 Might Be Mentioned

• Possible confusion with the 1865–1870 peak noted in some Hudson's Bay Company datasets for certain posts.
• Civil War-era demand for fur (hats, linings) increased trapping pressure, which could distort harvest records independent of actual population.
• Anecdotal accounts from settlers or trappers in a specific locality, later generalized.

Without a specific region or data source, the claim of a 1865 hare "plague" or explosion remains unsubstantiated. Ecologists rely on long-term trapping indices, not single-year anecdotes, to identify cycle peaks.