Long Fibers Seen Floating Through The Air In Whangarei, NZ Today

Two of us witnessed what looked like a steady stream of polymer fibers floating through the air today, from the suburb of Woodhill in Whangarei, NZ. I have seen them on a number of occasions this year in the same area. Virtually every time I look for them now when the sun is behind them and the weather is fine, I see them. These photos were taken between 2.00pm and 3pm, looking towards the Western Hills Reserve from Kirikiri Rd.
To see photos of the fibers seen, please link here: