Below is the synopsis of "The Birds," also thanks to IMDB.
A wealthy San Francisco socialite pursues a potential boyfriend to a small Northern California town that slowly takes a turn for the worst when birds of all kinds suddenly begin to attack people.
Compared to sharks, snakes, and alligators—birds don't seem terrifying. But the difference is that they can fly, and "The Birds" definitely succeed in making moviegoers scared of birds. "The Birds" was another standout for Hitchcock and was literally in its own lane at the time. Heck, it still kind of it is—the film neither a full-on creature feature nor a straight-up thriller.