What does the black bird represent?

[Ankh]

It is good to know what symbols mean in the collective mind, but the most important issue is what they mean to you and in what context they come to you. If you see them in meditation or if you want to use them in magic, you need to discover what that symbol evokes in yourself. If you see black birds in meditation you need to understand what feeling they evoke in you - what do you feel when you see it? If you want to use it in some magic ritual you need to go further.