Good idea. Updating...
Wingbind (Su): Once per day, a bramble may target the wings of a single creature of Small size or smaller within 120 feet with an entangling net of thorny vines. The target must succeed on a DC X Reflex save or its wings become ensnared and it immediately falls to the ground, taking falling damage as normal. This affects only the creature's wings; other movement modes are unaffected.
An ensnared creature can escape with a successful DC X Escape Artist check or burst the vines with a DC X Strength check. However, each attempt to burst the vines results in 1d4 points of piercing damage from the thorns. Spells that affect plants, such as diminish plants, can also release the victim.
A target that fails its save remains ensared for 6d6 rounds. The save and check DCs are Charisma-based.