←
Middle Dutch berke (inherited)
←
Proto-Germanic *berkō (inherited)
←
Proto-West Germanic *berku (inherited)
←
Old Dutch *berka (inherited)
→
English birch (cognate)
→
Faroese bjørk (cognate)
→
Luxembourgish Bierk (cognate)
→
Norwegian Bokmål bjørk (cognate)