Bernadette – 3DS MAX + ZBrush
Parot – Maya + MentalRay / A HDRI Probe and two lights were used for the lighting
Non textured model – Made with ZBrush
Here are some of the most beautiful 3D renders (made with 3DStudio MAX, Zbrush, Cinema4D and other famous tools) you can find over the internet: 50 of the most Stunning 3d Renders.
This is a nice selection and the author has done a great job!