I just happened to be standing by a window and saw something streak by out of the corner of my eye. Simultaneously with a bird making a noise I'd never heard before. I decided to go out and investigate and heard my rooster sound an alarm and saw all my girls go running for cover. Upon looking up, I saw a HUGE hawk fly off. I followed it around the house and saw it perched in the tops of one of our tallest trees. It didn't like my presence and so it flew back to the other side of the yard. I followed it again and it flew away. I then went and put all my birds in their pens and counted them. The only one I'm missing is one that disappeared last week so I'm guessing this hawk is the culprit for that birds disappearance. I think I'll leave my birds locked up for a while. I feel bad doing so though. The pens are both in the shade and it is an ice rink in the runs. Better that than hawk food though.