A variety of fresh cherries on display at the Portland Farmers Market. The pile in front are "Rainier" cherries. This species was developed in 1952 at Washington State University. Rainier's are considered a premium type of cherry. They're sweet with a thin skin and thick creamy-yellow flesh. The cherries are very sensitive to temperature, wind, and rain. About 1/3 of a Rainier cherry orchard's crop is eaten by birds.