I've found with just a little bit of noise, sometimes my sun can scream as well. Certain noises & noise levels can set them off pretty easy. Same goes for sudden movements from people. So if your playing a game, watching TV that's loud enough or has enough different sound effects, then yeah, your jenday will wanna join in. Conures just wanna join in & don't like missing out. For things like that, (before my sun gets the chance to scream) I take her to the lounge with me for about 20 mins then put her back with a treat & she's happy.
Most conures can be heard from outside. My sun has learnt what my car sounds like & I can hear her as I get around the corner, before I pull in the driveway. She's also learnt the microwave means a yummy warmed meal is coming so she started to scream every time she heard the d*mn thing on!
My point is they learn what things mean really fast, they NEED (not want) to join in the fun, they're NEVER afraid to express themselves in any way. Even if you're just sitting there watching star wars marathons, they learn bad habits from us even if we have no intentions of teaching them & didn't realize we'd done it. They're way to smart for their own good sometimes. They know exactly what makes us tick...& gets them some kind of attention, even if it does make our blood boil.
I hear where your coming from wanting to pull your hair out. I can feel the same with my sun, even though she is a very quiet bird now. She can still let loose at the worst times. But 'feeding' these screams does make them much worse. As ear piercing as they are, feeding them just once is enough for them to dig their heals in & keep trying for your attention or for something else. Even a look at them will be enough to convince them to keep screaming.
I can tell you though, I don't know which is worse sometimes, my sun or my ekkie. My ekkie has picked up the black cockatoo screams from outside so he can belt out a he** of a scream when he wants to! It has almost the same high pitch as a sun conure
