The fletching (feathers) on the arrows in the movie are all turkey feathers -- distinctively barred and there is one for sale (movie prop) on eBay.

Turkeys are indigenous to North America and during the time period that this movie was set in (around 452 AD), there were no turkey feathers available in Europe. Turkeys were taken to Spain in 1500, and introduced in England around 1524.

What type of fletching was used back then? I'm still researching that and if anyone knows, please post a response.