is a landmark in horror cinema, and its production was as meticulous and challenging as the final product is terrifying. The making of the film was an ambitious undertaking, blending traditional filmmaking with groundbreaking special effects and a famously difficult on-set environment.
Hitchcock and his team faced a monumental task in bringing the avian antagonists to life. The film used a combination of trained live birds, mechanical birds, and optical effects, all of which presented unique challenges.
Animal trainer Ray Berwick was in charge of the thousands of live birds used. This included wild gulls, crows, and sparrows that were captured for the film. Crows and ravens, being highly intelligent, were difficult to catch, and a large nesting site had to be found in Arizona. The gulls, in particular, were known to be aggressive and would often go for the cast and crew's eyes, leading to numerous injuries. To make some birds more docile, they were reportedly fed wheat soaked in whiskey, a practice that would not be permitted today. The birds also brought lice to the set, which spread among the cast and crew.
The initial plan was to use motorized, mechanical birds, and over $200,000 was spent on their development. However, these looked unconvincing on screen, and the idea was largely abandoned in favor of live birds. A few mechanical models were still used in certain scenes, such as the lovebirds in Tippi Hedren’s car and the gull that pecks at the little girl at the birthday party.
Hitchcock and his team used a variety of optical techniques to create the illusion of massive flocks of attacking birds. This included the use of “matte paintings” to create large-scale aerial shots of the town and a “sodium vapor process” (or “yellowscreen”), a sophisticated compositing technique developed at Disney. This process allowed for the seamless superimposition of birds onto live-action footage without the “fringing” or shadowy outlines that were common with the then-standard blue screen technique.
For a single shot, Hitchcock would often combine live birds, animated birds, and mechanical birds. The famous climactic shot of the gas station fire, for example, which lasts only 10 seconds, was an incredibly complex sequence that required 32 separate exposures, combining multiple layers of film and effects.
Hitchcock chose the Bodega Bay area in northern California for its foggy, gloomy atmosphere, but he was disheartened to find the weather was often clear and sunny during filming. The crew had to subdue the color in the film lab to achieve the desired dark and gloomy look. Many of the exterior shots were filmed on location in Bodega and Bodega Bay, including the Tides Wharf Restaurant and the famous schoolhouse, which was shored up and rebuilt for the film. The interiors, however, were meticulously recreated on sound stages at Universal Studios.
The director was known for his meticulous planning and storyboarding. He and his production designer, Robert Boyle, sketched out every shot in minute detail. However, Hitchcock also showed a rare willingness to improvise on The Birds, particularly in the scenes of the attacks on the Brenner house, which he developed spontaneously on set.
The most difficult aspect of the production for many was the relationship between Hitchcock and his star, Tippi Hedren. After discovering her in a TV commercial, Hitchcock signed her to a seven-year contract. According to Hedren, Hitchcock became possessive and his behavior grew increasingly invasive and controlling. During the filming of the famous attic scene, Hedren was promised mechanical birds, but live ones were thrown at her for five straight days. On the fifth day, she was physically and emotionally exhausted and suffered a gash near her eye, after which a doctor ordered her to take a week off. This period of filming is often cited as a prime example of the director’s harsh and manipulative methods.