Slightly off-topic, but because of farming we also started to have problem with mistletoe. Many small bushes of rose-hips, blackthorns and other food that birds usually eat disappeared because of smaller fields being merged to one, flattened. So what birds eat now is mistletoe, spreading it from tree to tree by wiping their beaks onto the bark of the tree, leaving mistletoe seeds there.

To clear mistletoe from that many trees is fairly expensive so owners usually don't do it, and we have alleys and alleys of trees full of mistletoe. Eventually the tree dies because of mistletoe parasitizing it.