Gainesville, TX, USA
Photographed in Gainesville, TX at a gas station there on September 14, 2020. Appears to be a rare nearly-all-white common grackle. First time I had ever seen one, though apparently others have been spotted on occasion. Most photos of “white grackles” I have now viewed are not nearly as “white” as this one. Would appreciate feedback on rarity and cause of coloration.