I agree that the second and third photos are Brown-headed Cowbird. The flycatcher, however, is not a Say's Phoebe. Notice the large hooked nail on the tip of the bill. That takes it out of the realm of phoebes and places it squarely in land of kingbirds. The head shape, shape of the folded primaries, paleness of the throat, head pattern with a slightly darkened area below and behind the eye, paleness of the throat, and overall color suggest Western Kingbird rather than a Say's Phoebe.