I thought it was you but I got thrown for a loop because your post was about an amazon and I am so sorry you had to rehome your sennie! I wish you had contacted me about it because I would have taken her in (I hate to see birds I've known since babies to end up with God knows who). But, as to the amazon, I am afraid that you are not doing the right thing. Let me explain. When you uncover his cage at 7 or 7:30, he is not getting the benefit of the dawn light -and that's a problem (my birds start their day at 6am this time of the year and I turn on the overhead light at 8 am). And your making the room shady all the time is another problem (bright good quality full spectrum light makes them produce the happy hormones). He needs to be exposed to complete dark at night, bright light during the day and two whole hours of dawn as well as two whole hours of dusk without any artificial light on. Nothing else does the trick. You are also feeding over 17% protein (all pellets are higher than 17% so they are too high for amazons and other low protein species like conures, for example) and not enough raw produce. Amazons cannot be fed pellets. Period. They are too high in protein and waaaay too dry for them. As to his not liking fruits/veggies... well, I don't mean to contradict you but I find that VERY hard to believe. Amazons are great eaters -and I do mean GREAT eaters! They adore wet food and mine go straight for the gloop every single morning as if it was a delicacy they had not eaten in ages. My Zeus (Yellow Nape) doesn't even wait for me to hang the bowl inside the cage, he actually waits for it hanging from the outside of the cage next to the door opening and, as soon as my hand is close enough, he stretches out his neck so he can get the very first bite from it. And Groucho (a Double Yellow Head male -but he told me his real name is Eohl) flies across the birdroom as soon as he sees the ladle in my hand (this bird started eating the gloop on the very first day and as soon as I put it out for him after eating only seeds and very little produce for 24 years!).
TVs are not good for birds because of the way the image is 'produced' (teeny tiny points of light that kind of flash super fast and make brains produce Alpha waves) but they do like a background soft noise (I have the radio on for them tuned to an easy listening station - amazons LOVE music).
I don't know how long you've had him but parrots take a long time to feel comfortable in a new home. Of course, parrots that were kept the right way (good husbandry, enough attention/one-on-one and out-of-cage time, etc) adapt much more easily than parrots that were not - and being in a rescue for some time doesn't help things either. Male amazons are not really very friendly birds, you know... after they reach a certain age, the most that you can expect from them is for them not to be aggressive, to eat well and to cohabit with other birds (which is easy for them unless there is another male and only one female). I also do not use my hand with either of my males. I usually do not even use a stick because they are pretty obedient in that they go into their cage on their own in the evening when told to and, even when they fly a couple of laps around the room (Zeus likes to do that every now and then) they always end up landing back on the top of their cage. I do use my hand with the old females (I can even towel them and trim their claws without them even offering to bite) but not with Precie because she is Zeus' mate and he would eat my hand before I could even reach her
but, when it comes to zons that have no mate, in my personal experience, males are completely different from females. I've cared for over 10 zons and I've never completely trusted the males but the females are the SWEETEST things once they are comfortable with you - never aggressive, loving and even cuddly. But, regardless of species and gender, I find them all to be very sedentary birds and incredibly easy to care for, especially when you have a male/female bonded pair. They are great eaters, love to bath, they don't fly around a lot so it's easy to prevent them from chewing your entire house down and very easy and cheap to entertain, give them a nice, large, hard cardboard box and they are happy to chew on it for hours. I mean, with them, is just a matter of cleaning the cage and giving them food! My husband, who is only now (after almost 30 years of living with parrots!) beginning to really appreciate my birds absolutely ADORES Zeus and Precie since I took them out of the birdroom and put them in my dining room (I had to as I can't put two males with only one female) because they are so very easy to care for - and so beautiful (GORGEOUS birds!).
So, correct the light schedule and the diet, give him something to chew on and be patient. If you do right by him, he will be a very easy bird to care for.