What you saw was an add for Braggs Mountain Buffs. I talked to some people at the Small Farm Conference this year in Columbia, MO who had these birds. They told us that the pullets start laying medium to large eggs and the eggs get to be jumbo sized after a few months. The flyer says they crossed several breeds over 20 years to get these birds. Sounded ok to us after we saw a couple of pullets. We ordered some to try for next spring. We will see what happens. Thier address is Braggs Mountain Poultry, 1558 Kreider Road, Fort Gibson, OK, 74434. Hope this helps.
I don't know about that, but we liked the Black Austrolorps we had because they layed well and layed large brown eggs.
Buff Orpingtons are brown egg layers and are large chickens. So are Rhode Island Reds and still some others. Virtually all breeds of chickens lay larger eggs as they mature. A two year old Buff (Buffs are a golden color) will lay jumbo eggs in most cases. So will a Rhode Island Red or any of the several crosses of brown-egg-layers bred for egg production. Ox