Although I love the birds and their little ones, I worry when I see a nest here, because there are so many cats running about.
My grey male cat Smokey actually found us.  One morning my son and I were walking out the door to the car and the cat was across the street a ways down.  He heard our voice, popped up and looked at us as if he recognize us and ran to us.  He has been with us ever since.  When I looked into his eyes that day I told my son that this cat knew us and he was sent to be with us for a reason.  That feeling has never changed.  He has the wisest and most loving eyes I have ever seen in a cat.
I call him my "baby boy." Funny, many times he won't cóme in at night for Bob until I go to the door say his name and call out "cóme on baby boy." Then he decides he is ready to cóme in.