Just one tall building in Chicago, Illinois, U.S.A., caused an average of about 1,480 known deaths during migration season, according to one report.
Üks raport annab teada, et kõigest üks kõrghoone USA - s Illinoisis Chicagos põhjustas teadaolevalt ühe rändeperioodi jooksul ligikaudu 1480 linnu huku.