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The grey squirrel was the most common wild mammal seen in Greater Manchester in 2012, and were reported in four out of five gardens; hedgehogs were seen in nearly half of all gardens surveyed; bats were seen in a third of all gardens surveyed. The house sparrow, common starling, and common blackbird are among the most populous bird species in Greater Manchester; almost a third of Greater Manchester's gardens had baby blackbirds in June 2012. Eurasian magpie and feral pigeon are common and breed in habitats across the county. The South Pennines support internationally important numbers of European golden plover, curlew, merlin and twite.