Look up, listen, and be very concerned. Birds are vanishing – and their crisis is our crisis

The UK has lost 40m birds since 1970 and Europe as a whole has lost 600m birds since 1980. The British figures, especially for farmland species such as skylark and lapwing, have long been the worst of any country in the region. The North American continent, meanwhile, but especially the US, has seen avian populations fall by almost a third since 1970, losing a cumulative 3bn birds.