It nests on offshore islands, with the main population stronghold being Triangle Island off Vancouver Island's Cape Scott, where the population is estimated to be around 550,000 pairs.
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In 2002, Alison Watt published the book The Last Island, A naturalist’s Sojourn on Triangle Island, where she recalled her experience in the summer of 1980 when she assisted Anne Vallée in her research on Tufted Puffins.
She chose Tufted Puffins as a research subject and, starting in 1980, spent her summers on Triangle Island, an ecological reserve located in the Pacific Ocean west of the north tip of Vancouver Island.
The Last Island: A Naturalist's Sojourn on Triangle Island is a non-fiction memoir, written by Canadian writer Alison Watt, first published in September 2002 by Harbour Publishing.