Wildlife Spotting

This is an nightjar egg. Most likely only by the egg's image it would not be possible to achieve the exact identification (maybe there is some way to do this, I not known). But the point is that it's very difficult to photograph this bird and this time I could not do it (predictable...). But I got a short movie of it in its nest. That is in my blog (www.lifeinlog.org). I know that this species is common here in Brazil. Although hard to see, here we have many of them. I have some reasons to believe that this is the Hydropsalis albicollis, but I will not risk naming it yet. Does any friend could confirm this?