I came to this link looking for this answer and sadly things didn't come out as said. So, this is my experience I hope it helps. Set oven a 375 degrees and cook the drumsticks (11 in my case) for 45', then turn them around and cook again for another 15', turn them around once again and cook for additional 10' - this last time just to golden the skin. They were thawed.
Chicken drumsticks, or chicken legs, should be baked at 375 degrees Fahrenheit. They should be baked for at least 25 minutes or until an instant-read thermometer inserted into the thickest part of the leg reads 180 degrees.
Chicken drumsticks will take approximately 45 minutes to bake in the oven at a temperature of 350 to 375 degrees Fahrenheit. Although chicken can be cooked frozen, it is recommended for health and safety reasons to completely defrost it first.