My Ranger, almost 2 years old, has a very feminine looking head as well. People usually think he is a girl dog. He was neutered at 8 months so that might be why. I know that doesn't really offer any info but I thought I would just let you know that there are other male GSDs that have small heads.
genetics play a larger role in head and body size than does neuter
Thanks for the info. This makes sense to me because Ranger had a small head from day one. His body really seems to be filling out and after I posted yesterday I took another look at his head. He does seem to have gotten a more masculine head in the past couple months. It still isn't that big, but he is getting more of a masculine look to him.