Country diary: An urban habitat that is good for birds works for humans too | Mary Montague

Belfast: I take part in the British Trust for Ornithology's breeding bird survey, and find out what makes a national park cityMy participation in the British Trust for Ornithology's annual breeding bird survey has, until this year, meant a longish drive out of Belfast to record the species at a rural site. This year, however, I was offered an urban site close to home. Its route led me along a variety of streets, some with well-established gardens and mature trees. Swifts screamed across a blue sky, goldfinches flashed through the foliage and blackbird song was a constant refrain. As expected, I recorded fewer species than in the countryside, but some species, like the goldfinch, were more abundant.Birds don't demarcate the city from the countryside. While many species are long established in Europe's cities, studies have shown that birds are quick to adapt to newer urbanised areas too. Indeed, it's arguable that wherever a bird can make a living is its "natural" habitat. Songbirds like the goldfinch can thrive on ample sources of food, including those offered by feeders and bird tables. Buildings can provide nooks and crannies for cavity nesters like the swift. Because many urban birds, like the blackbird, are originally woodland species, the biggest factor in avian urban success is the interconnectedness of patches of vegetation - a city's gardens, trees, parks and cemeteries. Continue reading...