Bullock's Oriole or Icterus bullockii
Orioles are from my experience very skittish. This is a fully grown male - he's checking if the coast is clear..... to head for the feeder that is.
NIKON CORPORATION NIKON D300, f/8 @ 800 mm, 1/640, ISO 400, No Flash
Lil Judd aka LilKnytt Photography (c)