Breeding sizes

[Morgk]

These are more specific questions but any help will help me
Can a Salmon Faverolle rooster which is 8 lbs can he breed a Cochin which is 10 lbs? Will the eggs be fertilize?
Can a buff Orpington rooster breed a buff Brahma? Will the eggs be fertilize?
I just didn’t know having a average size rooster 8lbs if he could breed a bigger hen 8 1/2 pounds or 10 pounds? Thoughts

 

[DobieLover]

These are more specific questions but any help will help me
Can a Salmon Faverolle rooster which is 8 lbs can he breed a Cochin which is 10 lbs? Will the eggs be fertilize?
Can a buff Orpington rooster breed a buff Brahma? Will the eggs be fertilize?
I just didn’t know having a average size rooster 8lbs if he could breed a bigger hen 8 1/2 pounds or 10 pounds? Thoughts

Yes. Most LF birds can breed other LF birds. My 7 pound SF rooster successfully bred a 4 pound WLH. This is their daughter.

 

[edgarmongold]

Large fowl males can breed bantam females but not recommended.
Weight of male is a concern.
Bantam males can mate with large fowl females.
Not sure how he does it but one will get some fertility.
Probably low percentage