Keryn's Harry Potter Question

I think we have too much time on our hands, Keryn, because I have thought about this exact question. I seriously have always thought that Harry should have seen the Thestrels right from the start but as that wasn't the case my thoughts are that the person must have to be aware that they have witnessed a death. All the kids we know can see them and we know the reason were older when the death occurred.
Yes, I finished Breaking Dawn. Interesting. I won't say a lot but she didn't go the way I expected. But I did enjoy it. She wrapped it up but left the possibility of more.