UPDATE - 5:53 p.m. on 06/19/2016:
Santa Barbara Fire Captain Dave Zaniboni said Friday evening that fire crews had gained 90 percent containment.
Fire crews in Santa Barbara County were working to contain a brush fire burning in the hills just south of Santa Maria, Friday afternoon.
Santa Barbara County Fire said investigators believe a bird flying into power lines could be the cause.
Crews were attacking the fire from the ground and air.
The Ridge Fire—as it's called—had burned an estimated 20 acres and was 15 percent contained as of Friday around 1:00 p.m.
No homes were threatened at the time.