NOTTINGHAM, ENGLAND - JULY 10: A group of European Bee-Eaters sit on branches at Cemex's East Leake Quarry on July 10, 2017 in Nottingham, England. Thousands of birwatchers have visited the quarry over the last couple of weeks after a reported seven of the birds have taken up residence. The rare migrant birds, usually found across the Mediterranean and in North Africa have also been showing signs of 'mating behaviour', according to staff at the Nottinghamshire Wildlife Trust. (Photo by Dan Kitwood/Getty Images)