So we are fly fishing the Big Horn River in Fort Smith Montana. While we are fishing for Rainbows and Browns with Streamers we see two eagles harassing a duck. Every time the Eagles would stoop the duck the duck would go under water and swim to get away. I got my video camera out as fast as I could and hit record. This is what I captured. I hope you enjoy. tracymoorephotography.com. — at big horn river.