This fourth video is almost entirely useless - unless, of course, you happen to live in the UK and come upon a pile of 10 or more dead birds. I do find it interesting, though, that wild birds seem to be unaffected by the virus while domesticated birds (i.e. those which have been bred down to a few genetically manipulated species and have no biodiversity within their populations) are devastated by it.
I think the answer is clear though. We just gotta kill all these damn birds.