if you have AMS, it would be easier (no need to worry about dimensional accuracy) to print the first profile where the body is in one piece.
if you do not have AMS or prefer faster printing time despite manual filament change, please print the second profile where the different colored pieces are on separate plates.
Printing Suggestions:
Make sure you have good bed adhesion to prevent warping.
When printing plate 2 (the beak and face pieces), you can choose “by object” as opposed to “by layer” slicing order, so there will be less time spent on filament change. If you are printing without an AMS, simply move the same colored pieces to individual plates. Please see picture below for reference.
If you are using unusually large or small string, you may need to adjust the hole sizes. In Bambu Studio the option can be found at "Quality → Precision → XY hold expansion".
Non-printed Materials Needed:
Epoxy or CA (Cyanoacrylate) glue to combine the individual pieces of the bird body. If you are printing them as one connected piece with AMS you will not need glue.
String, approximately 1.5m any string you like, cotton, paracord core, fish wire etc. Better not be stiff or too thick for the best effect.
Eye screws or DIY with twist tie, 8pcs these will be the hinges to allow wing movement. You can buy mini eye screws such as this one (not an affiliated link, just an example) Alternatively, you can simply twist some twist ties from miscellaneous packaging to make your own loop ring.
Installation Guide
Glue different parts of the bird body together. Be very careful not to apply too much glue, or the exposed surfaces would be contaminated by the whitening.
Open the eye screw (with tweezer or plier, if not available, use a ruler or credit card) and link two together.
Insert the thread of the eye screw into the printed holes on the bird body and wings. Make sure they are 90 degree apart so the wings can move up and down. Use glue to be more secure if needed.
Wire the strings through the wing and around the hanging bar. Make sure the strings on either side are of equal length for the best effect.
Pull the string through the pendulum cylinder and tie a knot to fix it. If the weight does not balance well (depends on the material you print with), consider inserting screw or magnets into the pendulum until the wing angle matches your liking.