Two flocks, two roosters?

[Life is Good!]

Terrific news!!! I've fallen hard for a new breed of chicken. After 7yrs, I finally got the 'chicken math' itch...

So my beloved original flock of Black Java's are my staple egg makers, smile makers and go-to broody's. There are 20hens, 2 roosters, 10 new chicks.

My new breed, Swedish Flower Hen flock is six chicks - appears 3 cockerals, 2 pullets and one that makes me go 'hmmmm'?

Two runs. Two coops. One coop needs repair on roof (rebuilding actually). I like having a 'spare' coop for a broody hen or a quarantine situation. So I do not wish to house each group separately.

What do you do to keep purity in bloodlines? I do not wish mixed breed birds.

 

[Fanci Feathers Marans]

You could make a "Fort Cocks" for the spare roosters. That way you only have one roo in the pen at a time.

 

[The Moonshiner]

You can't keep purity if they're all housed together.

 

[RoostersAreAwesome]

You could have all your roosters in a rooster flock except one breed, and then you can hatch eggs only from the same breed hens as the rooster(s) that is with your hens. Here's the link to my article about rooster flocks: https://www.backyardchickens.com/articles/rooster-flocks.72998/

I have a question: why don't you want mixed breeds?

 

[The Moonshiner]

The OP states that they don't want to house them separate. Also stated they have two coops but wants on as a spare so not wanting to use it.
There isn't a way to make it work.
Separating out roosters would mean using the spare coop or building a new one. If they wanted a second coop then they could just keep the two breeds separated.
That isn't what they want.

 

[Folly's place]

I now have three breeding groups, and extra hens of other breeds. This spring when I wanted to raise chicks, the roosters and their hens were in separate pens for three weeks, and then another week while I finally could collect purebred fertile eggs. It was a royal pain, but without permanent separate housing, it did work for me. The breeding groups went out to range on different days during that month. My coop and run are divided into five separate areas that can be either open or closed off, and I do have a couple of big dog crates that work for broodies. Mary

 

[aart]

So I do not wish to house each group separately.
I do not wish mixed breed birds.

Sorry, can't have it both ways.
If you only had one cock, you could just hatch out that breeds eggs.
But with multiple breed cocks you'll need to separate both genders of the breeds.

You could make a "Fort Cocks" for the spare roosters. That way you only have one roo in the pen at a time.

Funny, but still would have to keep hens separate too.

 

[Ridgerunner]

Some basic information to help you with your planning. It takes about 25 hours for an egg to go through a hen's internal egg making factory. That egg can only be fertilized during the first few minutes of that journey. That means if a mating takes place on a Monday, Monday's egg is not fertile. Tuesday's egg might be but don't count on it. Wednesday's egg will be fertile. But note that is only after a mating. A rooster does not mate every hen in his flock every day.

More important to you, after a mating the hen stores the sperm in a special container near where the egg starts its journey. That sperm can stay viable for over three weeks. Most of us count on the hen laying fertile eggs for two weeks, but to be sure all the old sperm is cleared out or no longer viable you need to isolate the hen from a rooster you don't want to father the chicks for at lest three weeks, four is better.

A rooster will mate with any hen, they don't care about breed. You have been given different options above. If you want only purebred chicks, you have to come up with a way to isolate the hens with only the rooster you want. Whether that means using the facilities you have in a way you don't want to, building new facilities, or deciding you only keep one breed after all is up to you.