Flat bottom birds!
I recommend printing one as a test to make sure they fit your napkins and then scaling as needed.
Birds in pic are .2, 4 perimeters, 15% infill, ironing on. About 50 mins each on an Ender 3 S1 with a Sonic Pad. Filament is Paramount and Polymaker PLA.
There will be young kids at my Thanksgiving so I snipped a tiny bit of the very tip of the pointy nose just to be safe.
The author remixed this model.
Modified the bottom of the holder to a flat surface. Smoothed them out a little.