This female Rose-breasted Grosbeak wants no competition on the bird feeder and she makes sure the Blue Jay knows it. The jay is taken aback and defers to the smaller feisty bird. Canon 5D Mark lll, Canon EF 100-400mm f/4.5-5.6L IS ll at f/7.1, -.3 EV, 1/1250 sec, ISO 1000.