Hello, I have a problem here; at least I think so. I bought a Delaware hatchling from a feed store last thursday (so she's almost a week). She just won't grow, and is the smallest of five chicks. I bought an ameraucana (probably an EE though ) with her, and they were about the same size then. Since then, the ameraucana has gotten bigger than her, and weighs a lot more. This alone wouldn't worry me, but she is constantly peeping. Not the happy peeping, but a loud "I want something!" open-beaked peep. All day she does this, unless she's sleeping. I have tried adjusting the heat lamp, but that doesn't seem to be the problem. When I pick her up, she stops for a few seconds, but will start up again. Another thing, her breath smells like chicky poo. The others don't seem to have that smell, just her. Edit: Forgot to mention that she seems normal besides these issues. Has a good energy level, will peck at stuff and scratch the floor. I've seen her eat and drink. Here are some photos: She is the chick on the left. The orange-ish one is the aforementioned ameraucana. Her feathering so far. And I filled out this info for good measure: 1) What type of bird , age and weight (does the chicken seem or feel lighter or thinner than the others.) -- Delaware pullet, 1 week, not sure of the actual weight but she weighs hardly anything compared to the others. 2) What is the behavior, exactly. -- Not growing, constantly peeping, poo-breath 3) How long has the bird been exhibiting symptoms? -- at least half a week, probably more. 4) Are other birds exhibiting the same symptoms? -- No. 5) Is there any bleeding, injury, broken bones or other sign of trauma. -- No. 6) What happened, if anything that you know of, that may have caused the situation. -- Not sure 7) What has the bird been eating and drinking, if at all. -- water, medicated chick starter, and yesterday I gave them some plain yogurt. 8) How does the poop look? Normal? Bloody? Runny? etc. -- It's been a while since I've had chickens, so I'll just attach some photos: 9) What has been the treatment you have administered so far? -- Nothing. 10 ) What is your intent as far as treatment? For example, do you want to treat completely yourself, or do you need help in stabilizing the bird til you can get to a vet? -- Treat it myself if I can. 11) (photos above) 12) Describe the housing/bedding in use -- I have them in a plastic storage bin filled with pine shavings. Any help is appreciated!