From het X het each baby would have a 25% chance of being homozygous (clown in this case). That isn't the same as saying that for every 4 babies you will get one clown since it is a separate roll of the dice for each but long term you should see about 1/4 clown. The remaining would all look normal but each have a 2/3 chance of being hets. Since you probably couldn't tell by looking at them which ones where hets you could refer to the group of normals as “66% chance hets”.