They can, but they don't gain altitude so good. I had one fly across the road at top-of-windshield level. Since I figured it would just clear or just glance off, I did nothing to avoid it.
Unfortunately, I had a roof rack on. Fortunately, I was able to find replacement parts for the rack on eBay.
The turkey didn't appear to be harmed. After tumbling ass over teakettle to the ground, it walked into the field on the side of the road looking for all the world like a cat that wanted you to forget you'd just seen it do something beneath its dignity.
Turkeys are one of the animals in that general category that, knowing what we know now, you look at them and you're like "How could smart scientists not look at them and not see that they are obviously a form of dinosaur?"
The absolute favorite activity of my dog is to chase groups of turkeys that are in our yard. She’s only 15 pounds (and 15 years old now) and has never caught one, but I think being in the middle of a group of 20 turkeys all desperately trying to fly up to trees quickly is quite the experience for her.
She’s never caught one, even the younger ones. It seems like they can actually fly easier than the adults.