Nah... theymost likely think these rigs are big birds, cutting into their territory. They'll attack "proper" planes, too... I used to encounter a hawk near MMU that had apparently staked out part of the pattern as his hunting ground, or perhaps the family nest was below somewhere...
Anyway, like clockwork it would swoop down every time I was on base, veering away at the last instant.
And I'm sure each time, it thought :"Ha! He may be big but he's scared of me- look, he's gone over there to land!!"

I guess these eagles got "medieval" on the paraglider because it loitered a bit too long in their airspace, and was going slowly enough for them to actually make contact relatively safely.
The comment about "little ones" reminds me of the time a swallow or some other fast-flying very small bird once zipped right across my plane's cowling as I was rotating for takeoff on the runway at 4N1... I don't think it actullally passed through the arc of the peopellor, but it was real close. Lucky little bird.
