No after chicken math got hold.... we quickly expanded into other breeds. Current layer flock, are some blue egg layers mixed in with some layers day choice pullets.
We still have a wee bit of our silkies from forever ago, who just got "friends" some sebright's because of my Son's ex company who likes to yank at a kids love of animals..
(they also came with some wynadottes, easter eggs and some black, and red layers..)
I've also had many other actual breeds(including heritage) over the years but my predator factor is to high here requiring me to have a high level of replacements each year, so i have ceased investing big bucks into birds.
So long and short of it, no we have pretty much always had multiple breeds.
We still have a wee bit of our silkies from forever ago, who just got "friends" some sebright's because of my Son's ex company who likes to yank at a kids love of animals..

I've also had many other actual breeds(including heritage) over the years but my predator factor is to high here requiring me to have a high level of replacements each year, so i have ceased investing big bucks into birds.
So long and short of it, no we have pretty much always had multiple breeds.