Data and Trend Analysis (DATA) Refugees and Migrants at the Western Balkans Route Regional Overview, covering period October - December 2018, describes key trends in migrations in the region, detailing information about the number of people on the move, demography (age, sex, country of origin, etc), behavioral patterns, and routes in use - with a focus on children, particularly unaccompanied children. Data in this report includes key trends in Bulgaria, North Macedonia, Serbia, Albania, Montenegro, Bosnia and Herzegovina, and Croatia.