by Wolf » Wed Mar 09, 2016 10:34 pm
While there are times that parrots do things which cause humans to think that they are being dominant towards another bird, this is not what is actually going on as parrots live in a flock that does not have a dominance based hierarchy, there is no alpha male or female in the flock. We have a dominance based hierarchy and because of this when we see a thing that could be an example of dominance we tend to view it as such, because we are familiar with this even though there are often other principles at work other than dominance.
Still, it is very likely that adding a single male to this mix would cause an issue and likely fighting due to their not being enough males to allow both females to have a mate. This could cause the females to fight or it could result in a male and female both attacking the single female and perhaps killing her. This is not due to dominance but due to the territorialness of these birds, in that if one of the females bonds with the male then that mated pair would not allow the other female to continue to occupy the cage as that is their nesting space and they will not allow any intrusion into that space.
Should you be lucky enough to find two males of the correct ages you would still most likely need to have two cages that are large enough for two birds. Three is not a good number.