How do I get my bird to quit hollering all the time?

Feeding her food and talking to her is reinforcing the behavior, because you are showing her that she gets attention for causing a racket :) Try ignoring it, and give her attention when she is quiet! :)

Birds thrive on attention, therefore, paying attention to your bird, especially when it screams is reinforcing that behavior. When you bird screams, walk calmly away into the next room, pay as little attention to the screaming as you possibly can! Yelling back to the bird, giving it treats or attention will only say to the bird "You're being good, keep screaming!", by taking that positive attention away, it helps bring the noise level down. There are several good articles on screaming online. :]

http://rationalparrot.com

"But my parrot is getting louder after I've started ignoring his screaming! This is a really common situation, and if you think about it in a different way, it makes a lot of sense.

Let's say that every time you clap your hands, I give you a crisp $100 bill. You'd obviously clap your hands a lot, right? Now, let's say that you clap your hands, and I don't do anything. You obviously wouldn't stop immediately, would you? Clearly, I just didn't hear you! So you'd clap harder, and longer, more and more demanding. It would take you some time to eventually give up. The same thing happens with parrots. The burst of activity just before a behaviour stops completely is called an extinction burst.

Here's where the major problem comes in. Let's say that you clap for ten minutes, and then I give in and give you a $100 bill. What I've taught you is that you need to clap for 10 minutes, but eventually you'll get your money.

What happens if a parrot screams for 20 minutes, waiting for your return, and then you come in? You've just taught the parrot that they need to scream for a really long time, and then you eventually show back up. This is exactly the wrong thing to teach them...." read more at above site.

What kind of bird is it? My cockatiels tend to chirp loudly when they are low on food or water, and they hear me open the door. They also chirp loudly when they hear another same kind of bird nearby, and when they are separated from their friends, such as when I take one inside to play with, they all start calling loudly to each other.

Like the other person, I would suggest some toys, but not all at one time, it can be scary. I would alternate the toys from time to time to keep it interesting.

Otherwise you can let the bird sit on your shoulder while you go about doing your daily things. I would use a bird diaper thing that will catch all the droppings, otherwise you might need a small towel or baby burp cloth on your shoulder.

Birds are very social creatures and they enjoy company a lot, even from humans. I find that if you have only one bird, they need more attention. Since I have six, they are pretty much happy all together in a bird cage.

Growing up we raised parakeets and cockatiels, and had a few other types like Bourkes, budgies, and red-rumps. They all got along pretty well together, but some of them needed extra attention. They are fairly smart so I guess it is possible that the bird can get bored.

Ihave 2 parakeets Petey and Petunia and i Have found that if the noise level in the house gets loud so do they . I keep their food and water full and try rearranging their toys...Also once in a while i just whistle at them so they know that i am still around..that seems to work for me ..If the teenagers in my house turn up the music and noise level the birds respond as well

What kind of bird do you have,and how long have you had him??
Over the years I've owned many birds including Parakeets,Finches,Love Birds,Conures,Cockatiels,and an African Grey,and I have to be honest and say that birds are really vocal.
They are even worse if they're lacking something,-whether that be attention,food/water,toys,etc.
Right now,I only have Groucho,my Cherry Headed Conure,and he is probably the loudest of all the birds that I've ever owned.If he gets loud and I try to hush him up a bit,it only makes him worse.I have found through the years that keeping his food and water fresh and full,multiple toys and rearranging every so often,seems to help a lot with his boredom. I get Groucho toys with all sorts of wooden blocks and chews as that keeps his attention,gives him something to play with ,and he also loves chewing on the wooden blocks. Groucho has a lot of energy and seems to need a lot of things to do with his time.A big part of that is time with me,even if it's just that he sees me in the same room helps.Birds love interacting with you period.
They love the talking and need that one on one attention.
I've owned Groucho since the early 80's,and so far ,he still hollers when he wants to-as loud as he wants to.I have curbed him somewhat because over time I've figured out favorite toys,food,but birds will be birds if you know what I mean. Some people yell at their birds when they get too loud and that gives them attention in a negative way.They then learn and know the more that they yell,the more that you pay attention,so you have to be very careful of your reactions when he does holler.