Shrike

The only times I have seen these birds in this region have been in the late Autumn. This Northern Shrike was coughing up a "hair ball" at the southern end of the park near the Cedar Bridge. They are also known as the 'Butcher Bird", "for their habit of catching insects and small vertebrates and impaling their bodies on thorns. This helps them to tear the flesh into smaller, more conveniently-sized fragments, and serves as a cache so that the shrike can return to the uneaten portions at a later time.." http://en.wikipedia.org/wiki/Shrike