You can make an incubator
Might be instructions on here or im sure on Youtub Use an old cooler.Needs A heater,(light bulb usually) some control of the temp as it should be as close to 99.5 as possible the whole 21 days.Water reserve or cups for humidity,, should be 35 -45 then day 18 -21 65-75.a grate to be above the water cups and ventilation.Some ppl add a ols computer fan to keep the temp even in the bator
Dont know about the rooster but my guess would be the bantam wont know he cant win he has no mirror to see himself and will fight anyway....just get hurt worse or killed