Yeasty things and cranky chookens

This is day 2 of my sourdough starter....it appears to be doing it's yeasty thing

I fed it with a little more flour and water today, so we'll see how it looks tomorrow. I have some cranky chookens at the moment, they were all locked up today until about an hour before dark when I let them out to free range to keep them safe from the resident eagle...my plymouth rock rooster was cranky, I still have the mark on my hand where he bit and decided to hold on until I smacked him...naughty boy...
Does anyone have a surefire way to get rid of this eagle...other than a 22??