Notice the protrusions on the head of the animal. Those protrusions signify a male fawn (likely about 6 months year of age; more or less). These protrusions are the beginning of antlers being formed, but have not broken through the skin yet.
These are the deer that a financial penality will be imposed on, if shot.
The purpose of this financial penalty is to compensate for the loss of an animal (a buck) which moves the Ranch away from its goal of balancing out the number of doe and buck in the area.
There are two other things to notice in this photo.
First, take a look at the large ears in porportion to the rest of the head. In the field, a fawn's ears will look large in comparison with other deer. Second, take a look at the length of the fawn's nose. In the field, a fawn's nose will be short in comparison to other deer.
Also, the size of the body of the deer is a good measure when compared with other deer standing around it, out in the field. Although size is not a perfect indicator, normally fawn will be smaller than more mature deer and it's recommended that, on doe hunts, comparions should be attempted when deciding which animal should be taken.
When viewing deer on a doe hunt, normally (but not always) the smaller of the animals will be fawn; especially early in the season. The killing of fawn is prohibited on the Reed Ranch.