Is he even big enough to mate

[BlueGold]

I have a rooster that a bought. (on the left) and he has only breeding with my opringon (on the right) what are the chances of her giving fertile eggs? Because I want some Orpington babies and I don’t wanna put infertile eggs under my broody hen. What are the chances that she is fertile???

 

[V Dutchuk]

Fairly easy to find out. Open an egg into a saucer and look to see if you see a faint spot on the yolk (infertile) or bullseye (fertile) Of course the babies only be half ORP.

 

[BlueBaby]

X 2!

 

[aart]

What are the chances that she is fertile???

If he can 'reach', there's a good chance....
....but they won't be Orpington babies, they will be a cross between rooster and the Orp.