International Owl Center -. Vocalizations. Most people know that Great Horned Owls hoot. But most don't realize that there are several types of hoots, plus a variety of chitters, squawks, hisses, and bill clacking also in their repertoire.
TSC is a high technology company primarily engaged in providing engineering consulting services and specialized products to the U.S. Government and industry. Consulting and research services span the systems life cycle from advanced concept development through logistics support.
What is Tourette syndrome? Tourette syndrome (TS) is a neurological disorder characterized by repetitive, stereotyped, involuntary movements and vocalizations called tics. The disorder is named for Dr. Georges Gilles de la Tourette, the pioneering French neurologist who in 1885 first described the condition in an 86-year-old French noblewoman.