
While experts had been recording high mortality rates for brown pelicans for several years now — the result of harmful algal blooms, or "red tides" — this die-off appears different.
Now it's not just pelicans that are being impacted, but other water birds such as Brandt's cormorants, loons, common murres, and grebes.
The suspected culprit in this case is subtler and more insidious than the algal neurotoxin known as domoic acid. Experts say these recent deaths are likely tied to an extreme marine heat wave that is causing deadly changes in food availability.
Up and down the California coast this spring, ocean temperatures have skyrocketed. In some places, temperatures have climbed 4 to 8 degrees higher than average, breaking all kinds of historical records. For instance, in La Jolla, nearly 30% of the readings taken off the Scripps Pier this year have exceeded previous temperature records.











Comment: Also pertinent: 349 people killed in tiger attacks during past 5 years in India