Dark Purple Whirly Bird A flock of 3 whirly birds will create an artistic focal point to any outdoor space, so consider ordering at least that many. They will swirl around and bob up and down with the slightest breeze. Best displayed in a sheltered area to protect from the wind. Take inside in Winter. Made of durable weather resistant PVC Approximate size is 24" x 6" Balances easily atop a 36" metal rod which comes with your purchase of a whirlybird. Will sustain winds of up to 25mph.