Phil Robertson: Don't Be an Odd Duck, Cruz ... Get On Board with Donald!

"Duck Dynasty" patriarch Phil Robertson's got some advice for Ted Cruz -- get off the tracks, the Donald Trump express is coming through.

We got Phil on his way out of the RNC Wednesday night and he was fired up about "Lyin' Ted" going rogue -- refusing to endorse Trump during his speech.

Check out Phil's take -- it's interesting because he admits he was a Cruz man ... until Cruz got crushed by Trump. He's moved on, and thinks it's time for Ted to do the same.