I adopted a rogue chicken that was hanging out in a friend's yard. It looks like the 2 standard barred that I have in my flock. It does not crow but it seems quite large and it's comb is bright red. It's comb seems a little large for a hen and small for a rooster. It does not crow but is exhibiting what seems to me to be mounting behavior. I am confused. My chickens are only just starting to lay eggs. The first one I got was quite large and might be from the new chicken. The others have been 2/3 the size of the first egg layed. ????? I know the black star layed one of the eggs and probably two of them. The other two eggs are pink and a pinkish/light brown. Edited to add the following pictures.