Today we just had a hawk try at our 2 4 month old EE and cochin, no one got hurt. Our 5 white leghorns have never dealt with this, they're older and have been laying for months. I want to start off with reflective objects and perhaps 1 or 2 plastic owls or a windsock. Our yard is quite large for netting /fishing line. What size chicken do hawks prefer? What are juvenile chickens?