'- in c ( p. 255 ) earendel 'sets sail with voronwe and dwells on the isle of seabirds in the northern waters ( not far from falasquil ) -- and there hopes that elwing will return among the seabirds ' ; in b ( p. 253 ) 'he sights the isle of seabirds `` whither do all the birds of all waters come at whiles '' . '