Many species of small birds such as robins, dunnocks, green finches, siskin, woodcocks, and tits reside in the woodlands of Gillies Hill. Large corvids, the crows and the ravens, also inhabit the hill along with raptors such as the peregrine falcon which has been spotted on the western quarry cliffs. In the late summer of 2010 a red kite was spotted flying over the hill. After an absence of 130 years, red kites have recently been re-introduced to Scotland at Argaty near Doune where the population is slowly increasing; the recent sighting over Gillies Hill may indicate that the kite population is spreading to the south.