Its all energy and like with the living they have to be willing to share that energy with you for the meeting to happen. Its always a two way street with meeting someone.
Friends we have on line that we never meet in the physical are just as important in our lives as one's we know in the first person physical. We can share in the same feelings and memories and take those forth.
If the crow has chosen you as your spirit or totem animal, it supports you in developing the power of sight, transformation, and connection with life’s magic.