We were taught it was the worst bad luck if a bird flew into a window or even perched on a windowsill. My grandfather taught us that one and it stuck.
One, I know to be true was a if a family member's possession falls the family member will die. This happened the night of my grandmother's death. My mom and I were talking in our dining room where my grandmother's favorite plant stood atop the fireplace mantel. The plant fell and broke on the floor while we were talking and we both said, "Nana'a dead". We had visited her that afternoon in rehab and she was fine. Two hours later a doctor called and told mom Nana had died.