The Forehead Gland
There is a lot of documentation regarding the forehead gland and its use for communication purposes. One main attribute is that deer secrete an oily substance from these glands which darkens the immediate area on the frontal lobe portion between the antlers. This will normally be more pronounced on older more dominant deer. Predominantly this gland is used for marking purposes primarily when making rubs on trees. The oily secretion from the forehead glands contain a genetic calling card in regards to social status and hierarchy amongst the local deer herd. Typically a more dominant buck will make rubs with more frequency to announce his presence and stature. It has been said that the pheromones contained within the forehead gland are actually used to "kick start" or "announce" the coming of the next rutting phase. With rubbing beginning very early in the year, I believe there may less credentials to this statement. Regardless of scientific studies and personal beliefs, the act of making rubs is no longer known as simply a signpost for other deer to view as once believed. The forehead gland distinctly leaves a scented trademark personalized to each deer.
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