IMO there may be more feisty breeds but Meds are extremely wary, large and agile enough to defend.
When aerial predators approach, they see them long before I do, they send the hens for cover and stand their ground facing the raptor. The raptors that don't turn away get taken down. I know...
Do you run any roosters with your birds?
ETA
A big Mediterranean type rooster does wonders for protecting flocks from aerial predators.
My recommendation is a Minorca or black Penedesenca.
I use bottle rockets to chase away hawks. They're much more effective than gunfire because they go off...
I just found this question asked and the answer.
Can I legally kill such protected wildlife as a bald eagle or golden eagle if they are killing my chickens?
No, eagles are federally and state protected wildlife. Any permit to lethally control them would be issued by the U.S. Fish and...