Who started “Birdie Sanders”?

POLITICO, on X, Mar 25, 2016. It reached 6 platforms in 2.6 years.

LineageContestedKey steps, 11 of 18. Lines follow time and platform
People flip out over bird joining Bernie at the lectern.Bernie SandersBefore the first postPOLITICOFirst postPlatform jumpPeakOwner responsePressPlatform jumpPlatform jumpBacklashCommercialAfterlifePatient zero