(Salem, OR) -- The Oregon Department of Agriculture is warning ranchers to take precautions against bird flu. Highly Pathogenic Avian Influenza has now been detected in cattle on an Idaho dairy farm. The dairy recently imported cows from another state where bird flu was detected in cattle. Ranchers are being advised to practice good biosecurity. There's no evidence the virus is any more contagious than before and there is no risk to the commercial milk supply. ODA encourages farmers to test animals before moving them and isolate sick animals from the rest of the herd.