I actually chased a red tailed hawk away from my yard with a garden hose.... and I was screeching a hawk scream like a little banshee to make my birds go scrambling for cover, LOL! It was on a long approach from our back pond, swooping in to my free range area with talons out, aiming for someone. I was filling waterers and went for it like a maniac spraying way into the air trying to soak it, LOL! It worked though, at least for the time being. I am pretty sure if any neighbors saw me they though I was insane... 
