]New behavioral traits are often the first response of animals to changing environmental conditions. As cities increasingly become habitats of wildlife, researchers have studied behavioral changes in birds and examined how urbanization impacts parental care behavior of male song sparrows. The team found that in cities, where male song sparrows are known to be more aggressive than in rural surroundings, male birds visited nests more often than rural conspecifics visited countryside nests. The study is published in Frontiers in Ecology and Evolution. Read More