How do you get birds that are living in your house to leave?

So apparently a bird decided to go down our chimney and made a nest in the walls of my family's house. For the past few weeks we've been hearing the birds chirping non-stop, but we're not sure how we're going to get them out without causing a big ruckus. We're kind of hoping that they'll just leave, but so far there's no luck. Any advice?

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DreamyCrush · F

I had the same thing happen in the ceiling above the Powder Room. Birds were getting in through the exterior exhaust fan vent, and every Spring for 6 years or more, I'd hear them up there chirping and pecking. When I walked in there and saw feathers on the toilet seat, I knew I had to do something. I called in a bird removal expert. So, six hundred dollars and several contractor garbage bags full of nest material later, the birds are no longer able to get in because there is now a cap over the exterior vent. Every Spring since has been wonderfully bird-free above the powder room.