they were at eachother's throats in this picture I dunno why they can't get along!!!
I'm not allowed by my neighbors to capture them and get them neutered because the one elderly retired lady in my building will sit outside her apartment in a chair every afternoon and feed/pet them & honestly I don't wanna take that joy away from her even though I've yet to see a single bird in the 4 months I've lived here 
i used the feed the stray cats in my neighborhood and think that this sentence defined the colony since it was almost a half dozen cats and i suspected all of them were fathered by the same two large male cats since all of the younger cats had closely similar demarcations & coloring.
the big males were friendly to this one older female cat but would attack the younger ones if they tried to eat the food or drink the water i put out for them; i think that the female cat was the smaller cats mother since they were friendly to her like the big males were. i started dispersing the food over a large area to stymie the large males attempt to dominate it and that brought peace during feeding time.
i couldn't find a tnr group in the city that was able to help, so i spent the better part of 2 years doing it myself and managed to get the entire colony neutered/spayed and i cried when i moved away because i knew that they were going to experience short painful lives without me like most strays do. it usually took weeks for my landlord to respond while i lived there so i left bags worth of kibble all around the rental when i left to give them the best chance possible without me, hoping that it would be all gone by the time the landlord bothered to show up; but instead they took out a cleaning charge from my deposit to throw away the litter; i'm so glad i left texas