If you already have a keet or two and want another bird, like a lovebird, is it possible for all to get along? Yes it's possible but you need to watch them at all times
I understand they will need separate cages and the new bird will need to be quarantined away from the other birds, but will they,if possible, play nicely together if everything is harmonious or will the lovebird attempt to dominate/hurt the keets? Mine play nice together. The lovebird does try to nip at the keet every once in a while but I assume that is to be expected with any two birds. I find that it helps to keep the lovebirds wings clipped while allowing the keet full flight. This way she can get away if he is getting aggressive. Lovebirds tend to play rough and that could very easily harm a keet.
-Will the lovebird get jealous if all the attention is not on him/her? Not mine but he is used to sharing the attention since I got him after the keet.
How will the keets react? My keet fell madly in love with the lovebird the moment they were introduced
or will the they ignore the new bird? They may ignore the new one if you have two keets.
Happy and Jack do absolutely everything together, except share a cage. I do have the cages right next to one another (not close enough that they can touch through the bars) and I cover them with one sheet so they can still be together at night.
When Happy's cage door is open and she is in it, Jack will climb in and take a nap right next to her. It's so cute. They preen each other, feed each other, and take baths together.
I did get the lovebird while the keet was still very young so that may be the reason they get along so well.
Oh, I should mention that Jack WILL bite Happy if she comes near my hubby while he's holding him. My hubby is Jacks favorite pet, LOL!