 Common starlings in the south and west of Europe and south of latitude 40oN are mainly resident , although other populations migrate from regions where the winter is harsh , the ground frozen and food scarce . Large numbers of birds from northern Europe , Russia and Ukraine migrate south westwards or south eastwards . In the autumn , when immigrants are arriving from eastern Europe , many of Britain 's common starlings are setting off for Iberia and North Africa . Other groups of birds are in passage across the country and the pathways of these different streams of bird may cross . Of the 15 @,@ 000 birds ringed as nestlings in Merseyside , England , individuals have been recovered at various times of year as far afield as Norway , Sweden , Finland , Russia , Ukraine , Poland , Germany and the Low Countries . Small numbers of common starling have sporadically been observed in Japan and Hong Kong but it is unclear from where these birds originated . In North America , northern populations have developed a migration pattern , vacating much of Canada in winter . Birds in the east of the country move southwards , and those from further west winter in the southwest of the US . 
 Common starlings in the south and west of Europe and south of latitude 40oN <a href='drop_aux' title='1'><mark>are</mark></a>mainly resident , although other populations migrate from regions where the winter <a href='drop_aux' title='2'><mark>is</mark></a>harsh , the ground frozen and food scarce . Large numbers of birds from northern Europe , Russia and Ukraine migrate south westwards or south eastwards . In the autumn , when immigrants are arriving from eastern Europe , many of Britain <a href='null_genetive' title='3'><mark>'s</mark></a>common starlings are setting off for Iberia and North Africa . Other groups of birds are in passage across the country and the pathways of these different streams of bird may cross . Of the 15 @,@ 000 birds ringed as nestlings in Merseyside , England , individuals <a href='been_done' title='4'><mark>have</mark></a> been recovered at various times of year as far afield as Norway , Sweden , Finland , Russia , Ukraine , Poland , Germany and the Low Countries . Small numbers of common starling <a href='been_done' title='5'><mark>have</mark></a> sporadically been observed in Japan and Hong Kong but it <a href='drop_aux' title='6'><mark>is</mark></a>unclear from where these birds originated . In North America , northern populations <a href='been_done' title='7'><mark>have</mark></a> developed a migration pattern , vacating much of Canada in winter . Birds in the east of the country move southwards , and those from further west winter in the southwest of the US . 
Common starlings in da south and west of Europe and south of latitude 40oN mainly resident , although other populations migrate from regions where tdawinter harsh , thdaround frozen and food scarce . bigass numbers of birds from northern Europe , Russia and Ukraine migrate south westwards or south eastwards . In the autumn , when immigrants are arriving from eastern Europe , many of Britain  common starlings are settin offf for Iberia and North Africa . Other groups of birds are in passage across the country and thedathways of dem diffrent streams of bird may cross . Of the da@,@ 000 birds ringed as nestlings in Merseyside , England , individuals done been recovered at various times of year as far afield as Norway , Sweden , Finland , Russia , Ukraine , Poland , Germany and the LdaCountries . Small numbers of common starling done sporadically been observed in Japan and Hong Kong but it unclear from where these birds originated . In North America , northern populations done developed a migration pattern , vacating much of Canada in winter . Birds in the eadaof the country move southwards , and those from further west winter in the soudaest of the US .