NBA Star Chris Andersen -- Birdman's Home Investigated for Internet Kiddie Crime

The home of Denver Nuggets star Chris Andersen -- aka The Birdman -- is being investigated by the Internet Crimes Against Children task force in Colorado ... TMZ has learned.

Law enforcement tells TMZ ... the Douglas County Sheriff's Dept. received a tip from a California law enforcement agency back in February ... and finally searched Andersen's home early this morning. We're told officials seized property from the residence during the search.

We're told Andersen has not been arrested -- or charged with a crime.

Chris' attorney had no comment.