The black and white ones are silver laced Wyandottes. They are both showing saddle feathers and blotchy coloration over their shoulders of roos. With how developed the combs and saddle feathers, I would guess they are more like 3-4 months old.
The red ones are production reds (sometimes sold by hatcheries as Rhode Island reds) and if they are 2 months old then I would have to say roos but that is based solely on comb development. I'm not seeing any intense red coming in over the shoulders nor am I seeing pointy saddle and hackle feathers that would indicate they are cockerels. Based on the fact that I think they look to be more along the lines of 3-4 month old birds, I would lean towards pullets on those two. Check the feathers right in front of the tail to see if they are coming in pointy. You might have to part the juvenile feathers and look for feathers just starting to come in. They would be very shiny (almost wet looking), slender, and pointed. If they have those, then they are boys.
The red ones are production reds (sometimes sold by hatcheries as Rhode Island reds) and if they are 2 months old then I would have to say roos but that is based solely on comb development. I'm not seeing any intense red coming in over the shoulders nor am I seeing pointy saddle and hackle feathers that would indicate they are cockerels. Based on the fact that I think they look to be more along the lines of 3-4 month old birds, I would lean towards pullets on those two. Check the feathers right in front of the tail to see if they are coming in pointy. You might have to part the juvenile feathers and look for feathers just starting to come in. They would be very shiny (almost wet looking), slender, and pointed. If they have those, then they are boys.