The government UFO videos of birds

I've watched all the government released videos to date. There's a few that are pretty interesting. A few that are utterly useless. And at least 4 or 5 videos that are very clearly birds. What I can't get my head around is how the US military and intelligence analysts were unable to identify these. Like ever. When it takes most people a few seconds to immediately identify it as a bird or birds. So there's two possibilities here, both kind of interesting in their own right. Either the intellig...