Just to give you my input... I have 2 bronze winged males, Apache is 4 years old and Falcon is 2. They get on well even though they aren't closely bonded.
Apache is bossy and both are mildly territorial so they will chase each other at sensitive times, like when I come in the aviary with food or are handing out treats. That being said, they are not agressive towards each other as long as they have their space and they aren't agressive with Chiloe, my patagonian conure that shares their big aviary. They all live together in harmony and respect each other. They have many food and water bowls so there's no need to fight over them.
Other than that, my patagonian is the most jealous of the three when I'm in the picture. The boys will happily hang out with us even when she's on me but if one of them comes too close, she chases him away. They don't usually fight back and I've managed to limit that behaviour through training so we can mostly all hang out together now.
If Apache get's worked up over something, he'll take it out on me rather than the other birds. Haha Mine aren't one person birds either, they love my husband as much as me and will be nice to any visitors or animals. Apache just strongly dislikes children and used to attack them any chance he got. After years of working on it and him not having his cage in our living space anymore, he's doesn't attack anymore but he keeps his distance unless we're training.
I really don't picture them attaking a smaller bird... but they've always been around other birds and people, never been one person birds... so maybe it's more of an individual thing depending on what they've experienced.
