Polish ptak

← Proto-Indo-European *peth₂- (mention)

← Proto-Slavic *pъtakъ (inherited)

← Proto-Slavic *pъta (mention)

→ Lower Sorbian ptašk (cognate)

→ Polish ptaszek (suffix)

→ Polish Ptak (mention)

→ Polish Ptach (affix)

→ Polish Ptaś (mention)

→ Polish ptactwo (suffix)