Rick Dees -- I've Been Burglareezed ... Thief Stole $100K of Jewelry

Famed radio DJ and "Disco Duck" singer Rick Dees just got taken to the cleaners -- TMZ has learned someone allegedly broke into his L.A. home and stole roughly $100,000 worth of jewelry.

Law enforcement sources tell TMZ, the burglary went down recently while Dees was out of town. We're told RD's window was smashed in when he got back home ... and his large jewelry collection was missing.

So far, no arrests have been made ... but the LAPD is pouring over surveillance tapes for leads.

Do your thing, Duck.