I guess what I'm really asking is will these ever really be "pet birds"? When they were babies the owner said they could pick them up and they were cool, but then life got too busy so they kept them in the cage and said after leaving them in the cage is when the aggression started. My husband hates these birds because he thinks all they do is scream and bite but I really care about them but I'm just not sure what to expect from them long term.
I will take pics of their cage soon
I think that with time and patience progress can be made, but you also have to accept that they may never be personable and tame in the ways you are wanting them to be. I had rescued two gcc's over a year ago (Jade and Einstein, Einstein has since passed away from some continual health issues that he had, but Jade is still a part of my flock) and Jade came to me scared to death of people, terrified of hands, screamed non-stop and was so afraid that she would not come out of her cage for the first 3-4 months after I got her, because she had never been let out much previously and was so scared. Jade is still very anxious, and I have accepted the fact that she may never be as personable as my other birds, but now over a year later with a lot of time, patience, a large cage, plenty of toys and a good diet she now actually comes out of her cage every day, doesn't scream all of the time like she used to. She is still afraid of hands, and I know that she may never be comfortable enough to step up, or be personable with me, but at the same time every little, tiny bit of progress just means that much more, just her letting me be within 3 feet of her without her flying away, or when she comes close to my hand, actually plays with one of her toys etc. I know that she is happy now and that I am doing the best I can for her, so even though she may never be like some of my other pet birds, she is still such a special "pet bird" to me. So basically, what I'm trying to say is don't give up on them, let them have more time to settle in, be patient, I would get a larger cage and a variety of toys too and see if that helps with some of the squabbles they are having, take them to the vet for a wellness exam, if they haven't already been and just do lots of research on behavior, there is a wealth of information and ideas on here and always feel free to ask any other questions along the way.
Thank you, that's why I was trying to ask about separate cages as I'm not sure if I should get one big one or one each of a similar size (maybe taller) as the one now.
If you are going to get a new cage, definitely go with one longer, rather than taller. Birds move horizontally, so they make use of the horizontal space a lot more than the tall space. You can find a lot of information about good cages in this section of the forum, or you can even make a thread here asking about what cages might be the best options that fit into your specific price range and needs: Toys & Cages Bypass | Avian Avenue Parrot Forum