The Whitehall Ledger - Serving Southern Jefferson County in the Great State of Montana

By Ted Williams
Writers on the Range 

Sometimes, Poison is the Only Thing That Works


Three percent of Earth’s land mass is comprised of islands, but 95 percent of all bird extinctions have occurred on them. Main cause: Mice and rats introduced by humans.

Only 10 percent of the world’s islands are rodent-free, but a rodenticide called brodifacoum is changing that. On hundreds of treated islands recovery of native plants and wildlife has been swift and spectacular.

Consider rugged, 1,450-square-mile South Georgia Island in the Subantarctic. Before mice and rats disembarked from whaling vessels it had been Earth’s richest seabird rookery. For three years it’s been rod...

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