Today was interesting. i found greys and yellows all near each other. They were 2 to 3 inches. Not much ground cover and found in the middle of an area with some filtered sun and some not. They were hard to see. i stood in one spot and saw one ahead 5 feet. Go to that spot to pick it and turned around and missed 3. Worked a 25 foot area and missed quite a few. Then walked a path stopped to dig in pocket and looked down and there was another one. If I wouldn't of stopped might not of found that one. Go slow and every so often stop and look from different views.