New roo with hen. How long til it is his babies.

I'd give it a week to 10 days.

 

I believe most people would say to wait about 3 weeks to be sure that the chicks would be from the new roo, at least if you plan to sell them. If they are for your own personal use you could try it sooner.

 

I heard 30 days but I really have no idea.

 

I have also heard at least 3 weeks.

 

Ive also heard 30 days just to be sure !!

 

its 2 and a half weeks but i would go 3 just in case

 

I would definately wait 30 days. I had a golden laced wyandotte roo that i had to rehome last winter. 3 weeks later i had a broody hen. I had 2 ameraucana hens at the time which i wanted to hatch some eggs from. Thinking the daddy was my bantam white cochin i went ahead and put 3 eggs under the broody. Well that roo i rehomed was the daddy for one of the babies and he had been gone for 3 weeks or longer. That baby looked just like his daddy only with the ameraucana beard.

 

If the new rooster is mating her you could hatch chicks from her eggs now that could be sired by each roo.

Give her 3 weeks to be cleaned from the first rooster and all the eggs from then on should be fertile from the 2nd rooster.

 

I agree with 3 weeks. The reason I always say a month to be absolutely sure is that I have heard of some very rare cases when it was obvious the first rooster was the sire, even after a 4 week period. However, from my personal experience when my Hawkeye died and then Zane was hurt and couldn't mate the girls immediately afterward, eggs here were fertile up to two and a half weeks with some of the girls. I'd say you are probably safe at the three week point.