Flat Top

Field identification of buck fawns is best accomplished by looking carefully at their heads.  The top of the head directly between the ears in particular.  It should appear flat - unlike the domed head of a girl fawn or doe.  The reason is that male fawns have nubbins (or knobs) that will eventually grown into antlers next year which makes their heads appear flatter.

In this picture - featuring twin buck fawns - you can actually see the nubs above and behind each eye and before the ear.

If you want to go serious on promoting an optimal age/sex ratio and trophy antlered deer it may be sensible to target does and let the little bucks walk.  Of course, if you need to control the herd size - brown is down.

click on the image for a better look at the  nubs