I don't believe in that stuff but I've actually had a couple of experiences concerning feathered animals after someone passed. I lost a dear friend many years ago. We used to go fishing together all the time. After the funeral I went to one of our favorite fishing holes. While I was sitting there a small bird (some kind of sparrow) landed just a couple of feet from me and sat there calmly watching me for quite a period of time... just hanging out watching me. It gave me comfort to think it may have been him although I know it wasn't.
The other incident was interesting. One of my musical buddies passed a few years ago. A bunch of local music friends did a memorial/fundraiser show for his wife an family at a local venue he and his wife
(and many of us) played often. When it was my turn to take the stage, I went to get set up and right where I was supposed to be was a small white feather. I picked it up and kept it. Then, several months later when I played the same venue, I was packing up and putting things in my SUV and a similar small white feather blew into the rear hatch as I was putting things in. Mind you, it was winter and the birds aren't very active then. Certainly made me go "Hmmmm"
Positive thoughts