REASONS TO AVOID BIRD-FOOD GRADE CANARYSEED
Today most canaryseed sold as bird food is still the traditional variety that has potentially dangerous silica fibers on the hull.
Several peer-reviewed scientific studies have indicated that human consumption of flour contaminated with canaryseed silica fibers is linked to esophageal cancer. Silica inside the lungs and throat may cause health problems. It’s possible that the tiny needle-like shape of the traditional canaryseed silica spicules, similar to asbestos fibers, is part of what causes cell damage in the esophagus.
If you buy and consume canaryseed sold as bird food you take that risk. For your health and safety we strongly recommend buying only Silica Fiber Free™ canaryseed—not bird food.