Conversation so far:
What can you tell me about Tippi Hedren and The Birds?
The Birds is an Alfred Hitchcock movie that stars Tippi Hedren
Was the movie The Birds successful?
Yes, The Birds made $11.4 million in the box office
Did Tippi Hedren gain any further recognition for The Birds?
Hedren received the Golden Globe Award for New Star of the Year, tied with Elke Sommer and Ursula Andress.
What did Variety magazine have to say about The Birds?
Variety said, Aside from the birds, the film belongs to Hedren...[she] has a star quality and Hitchcock has provided her with a potent vehicle to launch her career“

Question: How long did she work on The Birds?
Self-contained rewrite: How long did Tippi Hedren work on The Birds?