What killed the birds? Scientists blame the Blob

Cassin's auklet
This Cassin’s auklet was found on Oregon’s Kiwanda Beach in 2014. (Patty Claussenius Photo / COASST)

Researchers have untangled the mystery behind a die-off that felled hundreds of thousands of tough seabirds known as Cassin’s auklets in 2014 and early 2015.

It’s not a simple answer: The proximate cause was starvation, but in a study published by Geophysical Research Letters, scientists report that the most likely root cause was an anomaly in Pacific Ocean circulation that came to be known as the Blob.

“This paper is super important for the scientific community because it nails the causality of a major die-off, which is rare,” senior author Julia Parrish, a marine scientist at the University of Washington and executive director of the Coastal Observation and Seabird Survey Team, said today in a news release.

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By Alan Boyle

Mastermind of Cosmic Log, contributing editor at GeekWire, author of "The Case for Pluto: How a Little Planet Made a Big Difference," president of the Council for the Advancement of Science Writing. Check out "About Alan Boyle" for more fun facts.

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