Red-Tailed Hawks (Buteo jamaicensis) are the most widespread large hawks, or Buteos in the US. This is a scream you typically hear far overhead while the bird is soaring in a thermal, often with his mate and a child or two. If you hear it, look way up there! This particular sample was recorded near a Red-Tail's nest, where I was recording Warblers. The hawk was telling me I was not welcome!