One thing you immediately notice with Hitchcock films is something you also notice with Disney animated features (both made when he was alive and in the half century since his death): they usually have the same basic story structure that becomes a little monotonous if you see a cluster too close together in a row. In this regard, they aren't much different than Hopalong Cassidy westerns, grade B sci fi of the '50s and VHS porn of the '80s. Key difference here is that Hitch and Disney had better production values.
There is always this huge set piece that the production crew spent more time and effort on than any other set piece in the movie and it is saved for the final reel, followed by an uplifting ending to give the audience a breather at the end. Examples include some gun battle on the rooftops, Statue of Liberty, Mt. Rushmore, a merry go round gone amuck, airplane crashing into the ocean, burning of Manderley, etc. etc, etc. Or, in the other case, a battle with a dragon or other kind of monster or Monstro the whale, two dogs fighting a rat, an elephant shocking the circus crowd by flying, a forest fire brought on by "man in the forest"... and these get especially predictable in the post-Little Mermaid era when Ursula goes totally bonkers and morphs into the monster-of-all-monsters.
Occasionally you have the film that goes against "type" such as Vertigo, in which Hitch re-arranges the familiar pattern so it is different than what his audience is used to, much as we also got with Alice in Wonderland. These films are often bombs with critics at the time of release and were among the first to get played on network TV rather than reissued in theaters, but they also become the cult favorites later among the Fan-Base whenever they want an alternative to the same microwaveable dish they are used to.
I guess I would classify The Birds as intermediate between "standard" Hitch and "different than the others" Hitch since its structure is not normal, but also not too abnormal. It still fits in with the others. He didn't twink the familiar structure too-too much like he did Vertigo. In the end, the birds themselves are another ambitious set-piece that builds to a dramatic climax.