Many imitation products have found their way onto front lawns and store shelves since then; those "official" pink flamingos made by Union Products from 1987 (the 30th anniversary of the plastic flamingo) until 2001 can be identified by the signature of Don Featherstone located on the rear underside.
However, HMC International LLC, a subsidiary of Faster-Form Corporation, purchased the copyright and plastic molds of Featherstone's original plastic flamingos in 2007.