I saw this large bird gliding fairly low over the trees while hiking in the late afternoon in some hills near Taipei recently. It seemed quite large compared to what I normally see here. It's quite difficult to gauge, but I'd guess the wing span was one meter or so.
It made that shrill, descending, single "peeeew" sound that I associate with birds of prey (probably mostly from old movies or TV commercials).
Is it at all possible to guess if this is a hawk or an eagle from these cell phone snapshots? These are cropped out of the full resolution originals. A half-size original for scale is also included.