See, I WAS WRONG, you're over 18!!! Sorry about that, I always do that...When you said you were breeding and raising birds "with your dad", I once again assumed that you had to be a kid...I have to stop doing that...
I really like your Aviary set-up! Very nice, clean housing for your breeders, and their cages aren't tiny little "breeding-boxes" like you so often see so many parrot-breeders keep their pairs in. You've also got a nice mix of parrot species, actually very similar to the species that I bred for the 20 years that I did it (except I never bred IRN's/Alex's). I am now 39 and stopped breeding and raising almost 7/8 years now, but I too bred Cockatiels, Green Cheeks, Suns, and Jendays...I never bred IRN's or Alex's (I couldn't tell in the video if the green Ringnecks you have were IRN's or Alex's), but instead I also bred both American and English Budgies, along with a really nice mix of the less-common Parakeet species, including Moustache/Mustache Parakeets, Canary-Wing/Bee-Bee Parakeets, Rosey Bourkes, Princess of Wales Parakeets, Lineolated Parakeets, etc. I miss it sometimes...and sometimes I'm glad I don't have to set an alarm to wake me up every 2-3 hours throughout the night to feed 2-3 week-old chicks, lol...
****The only bit of advice or suggestion that I would give you and your dad, and I say this with the utmost-respect to both of you and your Dad, and am only trying to help not only you guys, but actually more-so want to help your birds, is that you need to put a few more toys inside of your breeder's cages, as it looks like at the most I saw 1 single toy in each cage, and some of them didn't even have the 1 toy. A lot of people who breed parrots, for whatever reason I don't really know, but they commonly do not put anything inside of their breeder's cages except a food dish, a water bowl, a perch or perches, and then of course the Nest-Box during breeding-season, and that's it....I don't know if they think that their breeding-pairs don't need to have any toys or active-foraging activities inside of their cages because "they have each other" and don't need any other forms of entertainment or mental-stimulation, or if it's just because they figure that they are "breeder-birds" who don't need toys or foraging-activities because they aren't "pet" parrots, etc...I don't know why, but it's so extremely common, and it's also very, very, very sad...
Now I did see that most of your breeder's cages do at least have 1 toy hanging inside their cage, so that's better than a lot of parrot-breeders provide to their birds...However, your breeding-pairs of parrots (specifically parrots, obviously not your chickens, lol) should not be treated ANY DIFFERENTLY than you would treat a pet parrot who lives inside your home. They are all "Parrots", and as-such they ALL hae the intelligence of a 3-4 year-old human child, from the smallest Parrotlet and Budgie to the largest Macaw and Cockatoo, and every single species in-between. They all use logic and reasoning skills, and they ALL get extremely bored, mentally unstimulated, and they all can and eventually will develop Feather-Destructive Behaviors, can begin to start Self-Mutilating, and most-commonly they all can become extremely depressed. And having their bonded-mate in the cage with them does provide them with a source of entertainment/socialization that does help a bit, there is no doubt about that, but the problem is that then you have not 1, but 2 parrots who deal with bouts of boredom and a lack of mental-stimulation at times throughout each day, and over-time their boredom, depressionn, etc. does effect each-other....And we have to remember that these are "Breeders", which are typically not hand-tame, and aren't typically let out of their cages every day for exercise/flight-time or to play on a big play-stand or play-gym, because they aren't hand-tame and they aren't easily rounded back-up, they can't be handled, etc.
So because most breeding-pairs rarely or never get time out of their cages to fly around, get exercise, or to play on play-stands or play-gyms that have lots of different types of toys and activites on them, and because they spend most-all of their lives inside of their cages, this means that we as their owners, the people who are forcing them to live their lives in-captivity as being solely parrots meant to be bred and produce babies, WE are responsible for providing our Breeding-Birds with as high a quality-of-life as we possibly can, WHICH IS NO DIFFERENT THAN THE QUALITY OF LIFE THAT WE PROVIDE OUR TAME, PET PARROTS...Or it shouldn't be any different, anyway...
***So what I would suggest is that you think not so much about all the different "types" of toys that you can provide your Breeder's with, meaning toys that all have different purposes/uses, and then get at least 3-4 different TYPES of toys IN EACH of your Breeder's cages, along with providing them ALL with some different "Active-Foraging activities inside of their cages at least once week. So you want each cage that contains a Breeding-Pair or an Un-Paired Breeder-Bird to have 1 toy for chewing, 1 toys for shredding, 1 toy for active-foraging (like the bird-toys that you hide treats inside and they have to figure out how to get them out), etc. Even just buying a couple of boxes of "Shredders" at Petco each month and wrapping each of your bird's cages up in the "Shredders", winding it in-between the cage bars, around the bars, up and down and all around the cage, etc. so that you are "GIVING THEM A JOB TO DO EACH DAY" would be an awesome idea that they typically LOVE and spend hours at a time working on. (If you don't already know what "Shredders" are, they boxes of 30 feet of reinforced, braided, thick strips of fully-digestible paper that resembles the "Chinese Finger-Traps" that are paper, that you wrap your bird's cage in, all around the cage, in and out and around the bars, etc., and they are extremely strong and not at all easy to just rip-up, they have to work at them. So you're giving your parrots a "job" to do, and usually if you wrap their cage up in the Shredders in the morning, they will work on them for hours and hours at a time, and they keep their brains and their beaks busy; they are sold in boxes of 30ft. long rolls at Petco for around $5 each, so they're also inexpensive, so great for people who have lots of Breeding-Pairs)...
The point is that a Parrot is a Parrot, regardless of whether they were hand-raised, hand-fed babies who are inside pets that are a part of the family and who are spoiled-rotten and spend all-day, every-day with their people, eating their meals at the dinner-table, watching movies on the couch, or sleeping in a special sleep-cage next to their owner's bed in their bedroom, OR whether they were parent-raised, non-tame and non-pet birds who are kept specifically to be Breeder-Birds...They ALL have extreme intelligence that is much-greater than that of any Dog, and they ALL are very social Flock-Animals who typically fly around 10-miles a day in the wild, doing nothing but Foraging for enough food to meet their nutrtional-requirements each day...So when a Parrot is kept as a Breeder and is typically not tame, it's extremely important that we as Breeder's remember that a Parrot is a Parrot is a Parrot, and Breeder-Parrots have EXACTLY the same needs as Hand-Tame, Pet Parrots have, that they are just as susceptible to boredom, depression, Feather-Destructive and Self-Mutilation Behaviors, and it's our repsonsibility to make sure they have lots of different types of toys in their cages at all times, lots of Active-Foraging Activities to take-part in, and that we rotate-in new toys on a regular-basis so that we keep their brains stimulated and their bodies/beaks active and moving...They'll be much happier, healthier Parrots, and that means they will produce healthier, happier offspring as well...And if we're forcing them to live their lives as Breeder-Parrots, this is the least we can do...It's what we HAVE to do...