Activities at Waimea Valley Audubon Center this month include haku lei lessons, hikes and Halloween mask making.

Lei makers will collect natural material from the valley to fashion a head lei using the popular twining style from 8:30 a.m. to 1 p.m. Sunday. This activity is for adults.

Discover Waimea's less-frequented northern valley from 8:30 to 1 p.m. Oct. 20. For ages 12 and up, this moderate to strenuous six-mile hike may involve shallow, slippery stream crossing.

Create a Halloween mask from valley material from 1 to 3 p.m. Oct. 27, an actvity for all ages. The programs are $3 plus the cost of admission. Call 638-9199.