and here is the file
https://www.dropbox.com/s/wwy8ypwv26aaevl/logo_cgcookie.blend?dl=0
it has become totally esoterik to me.
I tried to check all the visibility/opacity key I have set.
and when I set a key in the first frame for the crow that has zero opacity the crow started working
BUT the letters stopped working
and even giving them the same procedure made them appear or disappear ..randomly in the render
could this be a weird bug?