A fae is usually considered a young faery. It seems in most ancient literature, faes are most commonly under the ages of 13 or 14 years. In legends, the fae is usually described as "young and mischievous." There are a lot of modern uses for "fae" now though almost none are accurate to the traditional beliefs of the past.
The young faes hid in the trees as the archers walked past for they had not the wings of adolescence.