I read this topic a while ago, and I've been thinking on it, lol.
Hane is a rather quiet bird- when he was growing up I would leave the room when he got too loud.
So I began thinking about what keeps my sister's bird quiet...
Tsume goes nuts sometimes, and a high pitch too. But he never yells when he's detroying something. We take bamboo tops, when we trim ours, and put them in their cages. If you want it to last a day, put something destructable in at night, while he's sleeping and he'll begin attacking it in the morning.
There are shreddable strips you can buy, cut small lengths and tie on a bunch of his hanging toys. That takes a while for them to find them all and destroy them. And they're fairly cheap.
Foraging toys are awesome too. IRNs are pigs and will spend hours getting the food out. I have a Mazey Munch for Hane, and he'll stay at that until he gets every last little bit from a Nutriberry out.
Fruit on a kabob in the cage helps too. Especially if it's hanging so they have to hang and climb to get to the fruit. We only put fruit on the kabob- they won't work as hard for the veggies. xD
Any kind of shreddable toy, or destructable will help keep him busy.
Here are some links to toys I have, have had, and like to use:
http://www.drsfostersmith.com/product/p ... atid=14412
http://www.drsfostersmith.com/product/p ... catid=8415
http://www.drsfostersmith.com/product/p ... atid=17960
http://www.drsfostersmith.com/product/p ... catid=8400
http://www.drsfostersmith.com/product/p ... atid=16231
http://www.drsfostersmith.com/product/p ... atid=18063
http://www.drsfostersmith.com/product/p ... atid=17943
You can get toys that have cavities you can hide nuts in. Which makes for great foraging. Anything that takes them time and effort to do.
For easy to shred things, I'll buy from that company since you get a bit of a discount with six or more, lol.
I try to get toys that aren't hard, don't have round beads, etc. Birds like to destroy, hard toys defeat the purpose of the toy. Round edges are harder for a beak to get to chewing, square edges are easy. I have a variety of think woods and thick woods in the different toys. Always have ones with thinner wood pieces in the cage, when they just want a quick chew. Also toys with interesting textures. Hane has a preference for rope (cotton and sisal) and leather. So I try to include such toys- such as this one:
http://www.drsfostersmith.com/product/p ... atid=18066
But Tsume prefers more wooden and shreddable toys, as he is all about destruction.
If there are safe plants you can give to him to destroy, let him at it. We do it, because it's cheaper. When they finish stripping the bamboo we give them of the leaves and stems, they begin on the stalk itself, shredding it. O_O
And just for fun, this was Hane's favourite toy, lol. Don't know why, it just was. xD
http://www.drsfostersmith.com/product/p ... atid=13269
I suppose my thought is somewhere along the lines of preventing him from screaming in the first place. And if his beak is busy he might keep quiet. If he gets out of the habit of screaming, then perhaps he just won't do it anymore. At least I hope so. ^_~