the aggression has no connection to ratios. thai fighting chickens (the vietnamese, burmese and thai types i own) just have the genetic propensity for fighting. its like staffordishire bull terriers. its built in to the genetics . that doesnt make them aggressive towards people (the opposite, they are like dogs, with personalities , and are easy to work with, and handle, at least ours are like that, and all the ones i met in thai backyards in villages. the villagers handle theirs routinely, to shower the birds, clean out their crops (disgusting), etc)... ours at the moment have four hens, 2 of each are brooding together (their choice not ours); one blind hen that lays but doesnt brood, and she follows the lead roo; and four roosters. they killed a young male that my husband introduced, but the young male was already sexually mature i.e. a fully grown roo. howver, at present we have the four roos together, in a very large area, but they eat together, and walk together. there is the occasional skirmish but if we are there, hubby lets otu a yell (in thai) and they stop fighting right away.
they are tall leggy birds who need a lot of room to run/move. they absolutely hate being cooped up in small areas, and even those that live in those small round covered fence things in thailand get taken out to excercise often...
having said that, we have yet decided how we are going to introduce our 8 older chicks and then the remaining 12 chicks (or 14 ive lost count) of various ages when they get too big for living inside my house (or i get sick of them in my house, they are making my dogs nuts)... even in the house, they run to my husband when he calls them by name (yes the main ones ahve names)and he pets them and handles them, and they recognize us specifiically.
actually when my husband wants to encourage males when they start to go in to fighitng stance, he uses different vocals and words (in thai) so basically, they are getting certain behaviors reinforced///
in small areas, definately you would have to keep an eye out, and separation would probably be best. dont forget, these chickens were never bred to be in coops of any sort. villager who rasised these birds in thailand dont coop their chickens (well, ,the big breeders do but those birds have runs, and running /track machines etc), the chickens go up in trees, are down on the ground, eat what they find or are thrown (table scraps no matter what, fish, peppers, beef, veggies, and they have to compete with the dogs), and they have lots of area to move
our babies at almost two months are flapping around in their room, climbing the ladder to the gallery /loft area, grabbing rice and zooming around the room,
i have some pics in the gallery i think... i will upload more when i have some...
i dont know about shabos etc....