People breeding show chickens often wait until they are two years old before deciding which ones to breed. Thankfully you are not nearly that complicated if all you want is a body shape. Just do the best you can when you decide it is time. I don't wait that long either.
Those different colors and patterns of hens is interesting. The Mottled gene is a recessive gene, unless both parents have that gene you will not see it in any of the chicks. Barring is a dominant gene. If it is present you will see barring. I can't remember what happens if a chicken has the barring gene and also two copies of the Mottled gene. They kind of cancel each other but I can't remember the results.
In general, black will be very dominant. If you have a black rooster you often get almost all black chicks. With a red rooster the coloring of the hen often dominates. Buff is interesting. In theory it is like red but in practice you often get some interesting patches or individual feathers on the offspring. Imagine a black bird with an orange splotch on it or a black bird with a clump of yellow feathers.
Do these boys have mixed color/pattern parents? The black ones easily could, not so much the buffs. If they have mixed color/pattern parents then you could have about anything from their chicks.
I believe you want to keep two. I'd be tempted to keep a black one and a buff one for a multicolored flock. But personality or other things may come into play.
They are nine weeks old. Chonky Boy is going through his first juvenile molt. They will all go through another juvenile molt before they get their adult feathers. It is way too early to have anything solid to go on other than basic feather colors.
Good luck. I've been there, though I wait until a little later. It's more of a guess so do the best you can.
Those different colors and patterns of hens is interesting. The Mottled gene is a recessive gene, unless both parents have that gene you will not see it in any of the chicks. Barring is a dominant gene. If it is present you will see barring. I can't remember what happens if a chicken has the barring gene and also two copies of the Mottled gene. They kind of cancel each other but I can't remember the results.
In general, black will be very dominant. If you have a black rooster you often get almost all black chicks. With a red rooster the coloring of the hen often dominates. Buff is interesting. In theory it is like red but in practice you often get some interesting patches or individual feathers on the offspring. Imagine a black bird with an orange splotch on it or a black bird with a clump of yellow feathers.
Do these boys have mixed color/pattern parents? The black ones easily could, not so much the buffs. If they have mixed color/pattern parents then you could have about anything from their chicks.
I believe you want to keep two. I'd be tempted to keep a black one and a buff one for a multicolored flock. But personality or other things may come into play.
They are nine weeks old. Chonky Boy is going through his first juvenile molt. They will all go through another juvenile molt before they get their adult feathers. It is way too early to have anything solid to go on other than basic feather colors.
Good luck. I've been there, though I wait until a little later. It's more of a guess so do the best you can.