We had a racing pigeon once too - Pooey Dooey  

  He flew in the living room window one day and set up home on top of the dresser. I first noticed him when I had a feeling someone was behind me - looked up and there was Pooey Dooey.  I tried to evict him to the barn, but if ever a door or window was open, back in he came.  We eventually caught him and phoned the number printed on his wing.  His owner arrived in a big Merc (must be money in racing pigeons  

 ) and he was escorted away in a cage on the back seat.  He was apparently an excellent racer but his group had been attacked by a peregrine during a big race and he was the only survivor. The owner was very pleased to get him back.
We once had a cat, Polkinghorne (yes, I know) who did the reverse.  He had a perfectly good home with us, but loved to go round to people's kitchen doors and pretend he was starving.  When we lived in St Andrews, it turned out that 7 people thought he was their cat  
 
  
  
 
  Before that we had lived in Anglesey and he disappeared for 9 weeks.  I eventually tracked him down but didn't recognise the football he had become.  He had been adopted of course and every time he miaowed, they fed him  

  Not good.