After he no longer smells like a intact male they may accept him better.
I would introduce him to them one at a time, if he and one gets along, let them stay together and try another glider and so on.
If you introduce them to each other one at a time they can't gang up on your little guy.
Feathers-Sweetie, Sklyar Blue, Mister Peanut, Big Mack & Ibo
Fur-Widget, Gadget, Guinan, Mr. Spock, T'Mir, Micheal, Flower & Pappy
T'Pol, Pandora, Elizabeth & Curzon
TY, TJ & T'Pring
Forever in my heart, Gizmo, Tucker and the rest of my babies over the