No, that's not true. I've raised homing pigeons and their gestation time is pretty short, so I always had babies and handled them without any trouble.
I've never heard that about birds.
Cats - yeah. I heard that about feral cats. When I was growing up, we had a feral cat that had a "den" in our woodshed. I played with the week-old kittens once, and the next day they were gone. Momma still hung around, but I don't know what happened … Read more