My first 3d model design ever the V1.0 conure nesting box. designed on fusion 360 uploaded 3mf for orca slicer and separate stl files for all 3 pieces.

12x  6x2mm Magnets are needed to attach the top to the body amazon(affiliate link) https://a.co/d/ajlECW6
you might as well use any that fits the same dimensions 
the picture i took from the bottom doesn't seem that good is because i used support i'm not sure why it told me i needed support but it was a test model i went with and i ended up with leftovers. Anyways my GCC loved it n slept in it daily keep in mind if you open the top their tail will stay outside u can place double magnets to keep some space for their tail to wiggle outside if you want.

i printed this on P1S PETG the 3mf file Bird nest 2 is by bambu lab default settings bird nest.3mf orca slicer and my settings for PETG print.