You might want to learn a bit more ,about the divination art called Auguri .It sounds Italian ,because was practicedby divinators during the timesof Latin Empire .
If you can get hold on Ted Andrew's book Animal Speak.,He explains about auguri and totems into it .He also talks about the meaning of the directions and the hours in connection with the animal (s ) crossing your way .Or you can try to find online information ,about the art .I read the book very long ago ,so I really do not remember the exact meanings ,according your situation .
Crows are seen as messangers ,betweentwo realms .Most birds play similar role ,but in case of the crows they are messangers between the realm of the dead and our world .
Here I found a link ,which talks a bit,about Ted's point of view for this medicine :
Author of the article is Heather Cate .