What is sikh migration?

Some articles on sikh migration, sikh:

Sikh Diaspora - Sikh Identity Today
... Whilst the rate of Sikh migration from the Punjab has remained high, traditional patterns of Sikh migration, that favored English speaking countries, particularly the United ... Moliner(2006) states that as a consequence of the 'fact' that Sikh migration to the UK had "become virtually impossible since the late 1970s", Sikh migration patterns altered to continental Europe ... has now emerged as a fast-growing area for Sikh migration, with Reggio Emilia and the Vicenza province being areas of significant Sikh population clusters ...