Details are in the parent comment and in the article but if watching a video is more captive of your attention here's a report on Deutsche Welle which I found pretty good and more to the point. [1]
- habitat displacement
- competition for food
- diseaseEdit: sorry if the question came off as rude and that’s why it was downvoted, I was sincerely curious what you meant.
...or ever-increasing numbers of humans living an ever-more-consumerist life.
we're really not though. Extinction is about as natural as anything else. We've had many in our planet's history some wiping out 90% of life, for a variety of reasons. Your car runs on dead dinosaurs and trees that have been pressed and liquified into the sediment and we didn't bury them there, nature is hardcore that way.
Which is not to say that a balanced ecosystem isn't a great idea, but recognize it's an artificial one. Condemning hunters or humans or roads and just letting the Aurochs run wild is no guarantee for some kind of balance.
In Europe, the honey bee has always been there, and is no threat to anything else.