Pride duck with flag. No supports needed. 

I've added a modifier to include 15% infill up to the neck to make the model more stable. It was a bit top heavy with the flag, the infill will help it to not topple over.

I printed this with an A1 combo. The duck prints on one plate & the flag on another. When mapping colors for printing, map Blue to Red & Purple to Orange… after the Red & Orange layers have printed, swap your Red filament to Blue & your Orange filament to Purple.

Cut a 2 ¼" (57mm) piece of filament to serve as the flag pole (I chose black). Insert the cut filament into the flag, then insert the flag with pole into the duck's “hand”.

Make sure your plate is clean for the flags as there's a small contact area - use HOT water + dish soap, after washing, only handle the plate by the edges to avoid contamination. You could add a small brim if needed, but I've printed ~60 & only had 1 issue with 2 flags (to add a brim in Bambu Studio, go to the ‘Others' tab and change the brim type to ‘outer brim only’).