I don't hang out with my chickens but I give them a good once over every night as I say goodnight to them. One of my chickens who is about a year old has a swollen neck tonight. Yesterday, she was fine. Now, one of her wattles is severely swollen and the neck region right below her beak is swollen. She has all of her feathers, her eyes are bright and alert, I was unable to see any discharge. She didn't cry in pain when I touched the area. I removed her from the others when I saw her roosting neighbor pecking at her. Generally she is a wily hen but she didn't put up much of a fight tonight. I've owned her since she was a chick (1 year) but I don't know what kind she is. My daughter picked her out because she had chipmunk stripes. I think she is a Leghorn. She's mixed brown, slim, with an upright tail. We have a white one that looks just like her in build and is just as clever. We let our 19 chickens free range. The space they have enclosed at night is ~150 sqft and they forage on 2+ acres. I thought about predators but dismissed it due to lack of blood and death. I tried to Google possibilities and ran into big nasty viruses that are contagious. Eeep! I'm going to get some pictures in the morning to share. Is there anything else I should look for when I visit her then?