{"fact":"Urban crows are much more tolerant of humans near their nests compared to rural crows. Urban crows often don't even call out or fly away when humans approach, while rural crows do.","context":"The data supported our first hypothesis; nesting crows in Madison did not call or fly off as we approached their nests whereas rural crows always did so (Fisher exact test, both P values < 0.001; Table 1).","source":"R. L. Knight; D. Grout; S. A. Temple, Nest-defense behavior of the American Crow in urban and rural areas, 10.2307/1368772","index":31}