In 1995, Canada eradicated rats from British Columbia’s Langara Island; by 2004, ancient murrelet pairs had nearly doubled to 20,000–30,000

Rats arriving on Langara Island caused a severe decline in ancient murrelet populations. A poison bait campaign in 1995 successfully removed rats from the island. Seabird numbers quickly rebounded after the successful eradication effort. Other burrow-nesting species also began reappearing on the island. Langara Island now serves as a model for restoration projects.
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