Update: I've added a slightly larger version for the big booty borbs that need the perch farther away from the window, if any parrot people would like one even larget hmu and I'll upload another to your requested measurements

A simple perch holder with slot for droppings guard. Can be mounted on a window with suction cups or a wall using screws with the correct size of head.

I printed this in clear recycled petg with 0% infill, 3 perimeters, 1 top layer, 2 bottom layers, I think. I also did one with a hex fill and it looked pretty nice in the light. Model is in the orientation I printed it in. No supports except painted-on support at the lip of the perch end cap, using organic/tree style supports.

I used hand cut branches, mylar sheets, and this size of suction cup:

https://www.homedepot.ca/product/ook-1-lb-max-medium-clear-suction-cups-5pcs/1001026297

Important caveats: If your bird can conceptualize a physical barrier that cannot be seen, a window perch will be fine for them. If you dont know if your bird can understand force fields, introduction to a window might be deadly. Your bird will fly at the window and slam into it and break their neck and die. Dont take this possibility lightly.

If your bird is a hookbill, they will like to chew chewy things and might tear up the perch ends with gusto and maybe eat some of it. Keep a close eye on your guys and if they start at it, this perch is not for them.