This is a great finale after his rather abrupt landing (gotta love it!). His chest colors are highly defined. According to the heron/egret book I broke down and bought last year, the long throat feathers indicate a mature bird and are more intense and thick during mating season. Unlike a Goldfinch male, which is brighter during the mating season, the Great Blue's only change is the amount of throat feathers (the white ones). Down south (i.e., here in FLorida) there are strong signs that egrets and herons aare beginning to cross-brered as their habitat declines. The unusual coloration on your bird makes me wonder if this might be a cross-bred Great Blue. Hopefully other birders may have some input here. A great photo, my friend.