Original photo by Allstar Picture Library Ltd/ Alamy Stock Photo

With apologies to anyone who already found The Birds terrifying while under the impression that it was wholly fictional: Alfred Hitchcock’s avian thriller was partly based on a true story. Said event took place on California’s Monterey Bay in August 1961, when “thousands of crazed seabirds” called sooty shearwaters were seen regurgitating anchovies and flying into objects before dying on the streets. The Master of Suspense happened to live in the area, and called the Santa Cruz Sentinel — which had reported on the strange goings-on in its August 18 edition — for more information. Long after his movie was released two years later, the bizarre event remained shrouded in mystery: What would inspire birds to act this way, and were they as malicious as they seemed in Hitchcock’s movie?

“The Birds” features a cameo by Hitchcock.

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As he did in more than 30 of his other films, Hitchcock briefly appears in “The Birds.” The cameo comes just two minutes in, when the director is seen leaving a pet shop with two white terriers (his own pups Geoffrey and Stanley) as Tippi Hedren’s character enters.

The truth ended up being both straightforward and a little sad. The scientific consensus is now that the birds were poisoned by toxic algae found in a type of plankton called Pseudo-nitzschia. The birds weren’t attacking anyone; they were disoriented and barely in control of their actions. That explanation is absent from Hitchcock’s thriller, which also drew inspiration from Daphne du Maurier’s short story of the same name. (Hitchcock’s Rebecca was also a du Maurier adaptation.) A resounding success, The Birds is widely considered one of Hitchcock’s greatest works, alongside Psycho, Vertigo, Rear Window, and North by Northwest.

Numbers Don't Lie

Numbers Don't Lie

Rotten Tomatoes score for 2012’s “Hitchcock” biopic
60%
Year “The Birds” was added to the National Film Registry
2016
Oscar nomination received by “The Birds,” for Best Special Effects
1
Episodes of “Alfred Hitchcock Presents”
268

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One of Hitchcock’s earliest films is lost.

A full 86% of American-made films from the silent era (1912-1929) are considered lost, meaning they don’t survive as complete works in their original form. Among them is one by the Master of Suspense himself: 1926’s The Mountain Eagle, the second feature he ever directed. Though some production stills remain, all prints of the Kentucky-set melodrama have been lost. Hitchcock completists have spent the better part of a century bemoaning this, but he wasn’t especially bothered by it — he once referred to it as “a very bad movie.” Even so, the British Film Institute has long included The Mountain Eagle on its 10 Most Wanted list of lost films.

Michael Nordine
Staff Writer

Michael Nordine is a writer and editor living in Denver. A native Angeleno, he has two cats and wishes he had more.