Hi, that's a neat thing, thank you for making it. For me, the transparency is not working, the bird and the perch have a black background (Windows 10).
The issue was that the executable in the .app package did not have the execution flags/permission set. So I fixed it for myself and it is running now. Strange ...
Is it possible that the mac version has a 32bit executable in it ? That might be the reason. Is it possible that you package another mac version with a 64bit executable in it then ?
