ExactlyCurrently imagining the spiel trying to sell these.
"No ma'am they arent good layers"
"No, not meat birds either"
"Well you see, they perch better than any other breed on the market - they are master perchers, if you will
There is no perch they cannot handle"

If a wild bird out in nature can't perch well and falls off the branch, it gets eaten by the fox, doesn't pass on its genes and that strain of bird dies off. If a domesticated chicken falls off the roost, it sleeps on the floor of its coop and walks around with a poopy butt the next day, but continues reproducing and propagating its genes if its humans like its other qualities better.