Hi again! Imma gonna offer you expert dog advice. Some dogs are very high "prey drive", which is the irrisistable desire to chase little moving things, sometimes big. If it makes noise, desire can get stronger.
So these are the dogs used for serious work, like protection, scent discrimination...
I am new chicken owner. Mine are six months, and we went thru the same decisions before chicks went outside in June. We have nine assorted pullets and one surprise Rooster. I have five dogs, all large except one. I know a couple of mine have prey drive. My Pit Bull plays "ambush the chicks" thru...