First a word about each parrot's personality and the role it plays in the flock. Kili is the oldest (at least in my mind because I got her first, in hers as well I'm sure!) and for sure the most aggressive. As a Senegal Parrot, it's just in her nature. But I have trained almost all of that aggression out of her so she is super well-behaved. But there is no guarantee that she won't try to attack Santina and start a dangerous war. Truman is an easy going Cape Parrot. He has been bullied by Kili all his life and has become accustomed to having to yield his perch. He is absolutely non-aggressive and doesn't start fights. He is, however, stubborn and provoking. Until Kili gives him a good bite, he doesn't want to yield. Santina, being a green-winged macaw, is the biggest parrot. She is also a rescue with not a fully known history. She is extremely friendly and non-aggressive with me but she has been known to bite others. I have to be careful with her because she has the potential to hurt any of the other birds. But on the flip side I also know that she doesn't hurt anyone she likes. It will be important to get everyone to be on her good side.
The very first step in the introduction process has been to not do anything and just let the birds see each other through the bars from a distance. I did not want to overwhelm anyone by forcing an interaction prematurely. The next portion of the process is to begin the introduction in safe foolproof ways. There absolutely cannot be a fight or provocation. The birds must only get used to being near each other but without resorting to fighting. Since I am limited in being able to control what my parrots do, I have to shape the environment and interactions for success. The essential thing to prevent for now, is for two parrots to end up in close enough proximity to be able to start a fight for any reason. Thus the challenge is to bring the parrots closer together while keeping them apart.
To bring the parrots closer together without potential physical contact, what I have been doing is getting Kili or Truman in a grab (they like being grabbed so it's no problem) and holding them near Santina. I kept them out of biting range for sure. At first I kept them at some distance but progressively approached closer. This is a way to directly control the first interactions and helps me establish the relationship for both birds simultaneously. What I don't want is for them to establish relationships on their own terms because I don't know what those terms might be. I would rather take it slowly and ensure tolerance and ideally friendship between everybody. While holding one of the old world parrots in my grab, I would use my free hand to give scratches to both. I'd alternate between giving Truman a head scratch and then Santina.
By alternating my attention between the two birds, I deter jealousy and encourage mutual cooperation. You may recall that I encouraged cooperation between Kili & Truman by using the prisoner's dilemma in making them have to work together to get mega-treats. I would recall the birds to fly to me together and unless both came, neither would get the treats. They learned to work together for mutual success. Likewise, by requiring both Santina and Truman to be calm in each other's presence to earn head scratched, I am able to build a similar experience. Both birds were earning welcome head scratches that they would not have been getting otherwise at that time.
While holding Kili or Truman in a grab near Santina, I was carefully assessing each bird's body language. I was careful not to evoke any aggression while promoting responses most closely associated to contentedness. Nothing bad was happening to any bird but only good things. Interestingly, Santina was very calm. Although she showed some modest interest, she did not show the aggressive body language I have come to recognize that she makes when she ultimately ends up biting people. With Truman's approach, Santina simply turned her head around backwards and proceeded preening. This is definitely a sign of calm and trust. Likewise, Kili & Truman showed no aggression and enjoyed extra scratches.
By keeping the guest parrots in my grab, I was able to get Santina to associate some of the happiness she feels in seeing me toward seeing these other birds. They were a sort of extension of my reach. Santina's trust of the fact that anything I present to her is good, also helped. I repeated this grabbed showing exercise a few times.
The next step was to introduce some closer interaction with greater freedom without letting the parrots cross paths. I began working on flight recalls in the bird room with Kili & Truman. With Santina on a stand at the far end of the room, I gave Kili & Truman the freedom to fly in the same room as her. So even though they could fly up to her and start a fight, they didn't. They know how to focus on a training session and ignore all else during this time. This is where a focused training approach comes in really handy when introducing birds. The birds don't even have to know how to fly or do complex tricks. Just getting each bird to focus on some sort of known positively reinforced behavior (such as target) is a great starting point. The training creates sufficient distraction while also inadvertently reinforcing the parrots for being in proximity without contact. Santina wasn't neglected during this training time either. While Kili & Truman would be eating their treats, I would continue training with Santina as well.
By using pellets as treats for all birds, I was able to buy sufficient consumption time that I never had more than one unoccupied bird at a time. While the parrots were occupied eating their treats at distant ends of the room, there was no opportunity for aggression. With time and progress, I would have the birds end up closer to each other. I had Kili or Truman buzz right by Santina in flight to recall to me. They would ignore her presence and focus on flying to me instead. Since Santina was preoccupied eating her own treat during that time, she had little reason for concern either. Interestingly, Santina was not bothered or surprised to see these flying birds despite being clipped and living around clipped birds.
To take things even further, I began finding reasons to give a nut to each bird and putting them near each other to eat it. A nut is a really big deal for all of my birds and it keeps them so occupied that they notice little else while consuming it. I would have each bird do something to earn a nut and then put each on adjacent perches. None of the perches were in stepping distance of each other but the flighted parrots could easily hop or fly the gap if they really wanted to. But since all birds were preoccupied enjoying their nuts, nobody went anywhere and the all of the parrots had practice being in each other's proximity without doing anything undesirable.
These early introductions have been very successful. I will continue training the parrots near each other while maintaining separation. With time the separation will be reduced. I will also take the parrots places together. I have found that travel and socialization really brings parrots together in their familiarity with each other but not the new places. Lastly, at some eventual times the parrots will inadvertently come in each others immediate proximity and I will be evaluating the outcomes and whether or not they can be let together for any extended or unsupervised spans of time.
This is not an absolute approach to parrot introductions but it works well for me. This is the method by which I originally introduced Kili & Truman to each other and it worked. Now I am using the same for Santina. Having a good training background and well-behaved parrot in the first places are important requisites to having success with this introduction approach. So if you haven't already, check out my book, The Parrot Wizard's Guide to Well-Behaved Parrots to help you get to a point where applying this kind of training, being able to grab your parrots, etc are all possible in order to take advantage of these introduction techniques.
Kili & Truman buckled up their harnesses and rode on my shoulders the few blocks to the new house. I had a bug problem at the old apartment so I've been leaving as much behind as possible and only bringing clean things. This is why Truman's old aluminum cage had to be abandoned and not because there was anything else wrong with it. This is also why I opted to move the birds wearing harnesses rather than carriers.
We walked in through the bird room door and surprised Santina. She was sitting on the edge of her stand, excited to have company. Santina watched eagerly as her first bird visitors were settling in to the room next door. Kili & Truman watched me assemble water bottle holders, mount perches, and add toys to their bare cages. I bought two water bottles for each cage and mounted both brackets. Although I will normally only be using a single water bottle, when I need to go away for a weekend I will be able to leave twin water bottles for the unlikely event of a failure (in 5+ years using water bottles for my birds I have not had a problem).
The parrots sampled the toys as I was putting them into their cages. Truman gave his approval for a long strand of stars and Kili immediately began chewing up a cute shredding toy. These parrots love new toys, places, and situations. This is why it was an absolute non-event to move them to a new house. They have not shown the slightest sign of upset such as not eating, being quiet, or just inactive.
The reason it was so easy to move to a new house with my parrots without them freaking out is because we have already done this plenty of times before! Every outing, every trip, every household change we have ever made was a preparation for the unknown but inevitable eventual move. People often ask me "I am moving to a new house tomorrow, what can I do to make it easier for my parrot?" At that point it is already too late. The time to begin preparing your parrot for a move is now.
I occasionally took Kili and/or Truman with me to visit other people's houses. I took the birds for drives and outings. I had the parrots living out of their travel cages during trips and when we went camping. I even had the parrots living in completely different bird cages when we were visiting Ginger's Parrots Rescue. All of these different encounters prepared Kili & Truman to live in any sort of cage or house. And since they get excited about new toys, moving to a new cage with new toys is an opportunity rather than a burden for them.
Not long after I had the birds on top of their respective cages, Kili hopped over to Truman's cage and kicked him off to the smaller one. The funny thing is that the first time I let them out since, the first thing Truman did was to go and climb up into Kili's cage and stay there. It was as though she convinced him that if he just yields the bigger cage to her that she won't beat him up for it.
As for Santina, well she came from a rescue so she was already used to other birds. I could tell that Santina was excited to see other birds around and not upset. Kili & Truman have been to places with other parrots so to them it was no surprise to see a big bird next door. The move was such a non-event that it makes for a boring story. But that's what you want it to be. So begin preparing your parrot for any sorts of unforeseen changes by socializing and traveling with your parrot now.