I looked into some Slovak dictionary and the only hits I got were in a list of surnames (74 in 1995).
It's more likely that Migra is a Hungarian surname. Slovak doesn't have <g> natively (the old /g/ phoneme has become /ɦ/, compare Slovenian glava with Slovak hlava), so Hungarian could be a guess.
Gløgt er gestsins eyga. (Føroyskt orðafelli)
Wise is the stranger's eye. (Faroese saying)
L'occhio dell'ospite è acuto. (Proverbio faroico)
Hosťovo oko je múdre. (Faerské uslovie)
Fluent: Faroese, Danish, English, German
Almost fluent: Norwegian, Swedish
Basic: Slovak (studying), Spanish
Have studied: Hebrew, Russian
Interests: Ukrainian, Romanian, Italian, Albanian, Armenian, Ossetic, Hungarian, Estonian, Baltic languages