I was given 1 pigeon. I don't know the sex (neither did they). It is large, light gray body with dark gray head and neck (with some purple sheen). I don't even know the breed. I will be keeping it as a pet. My questions are: Male or female (it makes a growling noise when I pick it up) Breed? Best feed? What does the growling mean? Should it have a mate or can it be kept alone?