English birken

← Old English bircen (inherited)

← Old English *biercen (mention)

← Old English beorcen (mention)

← German birken (cognate)

← English birchen (cognate)

← Middle English birchen (inherited)

← Middle English birken (mention)

← Proto-Germanic *birkīnaz (inherited)

← Low German berken (cognate)

← Dutch berken (cognate)