So you are "adopting" this bird from a private individual, correct? Do you know the history of this bird, such as how many owners, has the bird been DNA-tested for gender or has the bird laid eggs to confirm sex, does the bird lay eggs chronically, what type of Vet care has the bird had, etc.? The more info you can find out about the bird's history, both medical/health history as well as ownership/environment history, the better.
Yes, I adopted the bird from a private owner. Adopted as in taken it in. To my flock and my family. The bird has had his nails trimmed, that's about all the vet care he got. There is no DNA on it, it could be either male or female. The lady had him/her for about 8 years, the number of old toys and the age of the cage are testament to that. Before her, another older woman had the bird, reason for giving it up = retirement home didn't take birds. Environment: the bird lived in the kitchen.
What is the bird's current regular, daily diet (including brands of pellets, seed-mix, etc.)? How long has the bird been on this particular diet?
Current diet: Pretty Bird bird food and peanuts, that's what I know for sure. Sweet potatoes at times. I just fed it carrots and broccoli, both of them very much liked. I also mixed the Pretty Bird she brought with pellets and dried veggies. Let's see how that goes. I will offer the same chop I offer my Timneh and my Amazon. They eat different things from it, but since it's chopped they get a bit of it all.
You need to find out the answers to all of these questions, plus as many other questions as you can think of, BEFORE you make a decision. I don't know how long this woman has owned this CAG, but I'm going to assume that the bird hasn't had much, if any Avian Vet care due to the woman's own health issues...So this is a big worry.
As stated above, this ship has sailed 
How did this woman come to get this CAG? Being that it was wild-caught, just wondering what the history is...Is the bird tame/friendly? Does it interact well with people, does it step-up, etc.? Does it live in a cage all the time, or is it out all day? I'm just trying to ask all of the questions that I ask when working at the Avian Rescue that I work at...I'm the Medical Liaison, so I do all the intakes, and these are the questions that help our Avian Vet make an overall assessment of need/care.
Smokey does not step up, but he steps up on a stick. What is it with sticks??!!! I have 4 birds who are horrified of sticks but won't mind the hand. I don't know how many hours per day he was able to be out of the cage. I asked but her answer was too vague to be believable. He doesn't seem to be overly aggressive, but then I don't push myself on him. We played ball for a bit, he let me scratch his had (a little) and he readily took veggies out of my hand.
***As far as the large, messy droppings...Yes, CAG's have very large droppings, especially first thing in the morning (I grew-up with a CAG who is now 32 and "my brother" as my mom refers to him, and I guess he actually is my brother really...His morning droppings are massive...but I'm going to guess that you weren't at the house when he did his first morning droppings, as they happen first thing when they wake up, so this wasn't that...However, it's very, very possible that this is due to his diet if he eats lots of fresh fruit, fresh veggies, and fresh greens.
I don't know what he ate yesterday morning. His poop is a little less copious today. He just played vigorously on his cage top, I sprayed him (it's hot here today) and he enjoyed it very much. He is now preening himself. I'm calling him a "him" for now. He's much to nice to be a female 
However, the reason that I asked about the bird's sex and whether or not it's been either DNA-confirmed or egg-laying confirmed is that one of the early signs of an egg being in the cloaca is huge, massive, messy droppings. So if the bird is a female and is an egg-layer, it could be that she was getting ready to lay an egg...tis the season right now too for this to be happening...
He has never laid an egg.
Other than diet or an egg on it's way out, then you have to move-on to other physical health causes, such as a Bacterial or Fungal/Yeast Infection in the GI Tract, which would be the most common medical cause of runny, messy droppings (although not necessarily effecting the "size" of the droppings), which you can only confirm/rule-out by having a Fecal Culture and microscopy. There are a lot of other medical conditions that can account for this, but most-likely it is one of the above.
****Something I wanted to make sure you're aware of is that a proper Quarantine-Period when you bring home a new bird, any new bird, but especially a "rescue" in this particular type of situation, is AT LEAST 30 DAYS of the new bird being kept in an entirely different room than any of your current birds, with door shut and no contact, not by air or otherwise, for the entire time period...You said something about not letting the new bird out of Quarantine "until after the Vet visit", but taking a new bird for a "wellness exam" does not release the 30-day Quarantine period, and with a bird like this you seriously do not want to risk it. The problem with the "wellness exam" is that the Avian Vet can only find infections, diseases, etc. that are "active" at the time of the wellness-exam. This bird could have come into contact with contagions that have a much longer incubation-period and that would thus prevent any Vet from seeing them during the initial wellness-exam. That's why the Quarantine Period must be AT LEAST 30 DAYS, because if you allow them to even be in the same room with each other sooner than that, you're really risking undiagnosed contagions infecting your healthy birds at home.
Understood. He is in a totally different room but any airborne contagious illness would be transmitted through the central A/C. I hate the situation but hope for the best because he has not been in contact with other birds for 8 years.
***As far as this bird's health, i can't say anything about the feather situation without seeing it, nor can anyone else (I'm not sure what you're describing), but the large, messy droppings could be a worry, or they might simply be due to diet...If the bird is a female who has a history of egg-laying then it could also be that, which is something that should resolve itself before you would take the bird home, if not then you've got another issue if it is an egg, so that's something that you need to find out. I think it's important to establish whether or not this issue with the droppings was a one-time thing due to something the bird ate, or if it's a chronic thing, etc. So you need to ask about that...
I will take a photo of the feathers and upload it.
However, regardless of the droppings issue, I would absolutely be getting this bird to either a Certified Avian Vet or at the very least an Avian Specialist Vet, and getting a full wellness-exam that absolutely includes a Fecal Culture and Microscopy, and really it should also include routine, baseline blood-work, BEFORE you make a decision whether to adopt the bird. You don't now what you're getting into with this bird, so that needs to be fair to you, but also the bird deserves to go to a family/home that is fully aware of any medical issues it has, and that will be able and willing to get the bird properly diagnosed and treated for them, regardless of the cost...Now if that's you then great, that's wonderful, but you still need to know what you're getting into, for both your sake and the sake of the bird and it's health.
