How old is the bird? Hen? Looks like possible rooster damage from him hanging on when he mounts. If you don't have a roo, then watch for a dominant hen doing it, which sometimes happens when there is no roo in the flock.
It can. If the eggs were on the edge of the pile, they may have gotten cooler. Just about anything can happen when they go from blastoderm to fully formed chick in just 21 days. It's pretty miraculous actually. I've hatched in the heat of summer with high humidity (Florida) and that can have...
Sometimes something as simple as temperature fluctuations and humidity can be enough to affect the developing embryo's. Usually there are more issues with incubator hatched eggs, but even a broody can have issues sometimes, particularly if she's sitting on a lot of eggs and they don't get moved...
Glad she's eaten a little on her own. Sometimes supportive care is all you can do. Good luck with her, and hope you eventually get answers to what's really going on.
I generally don't give dairy, too much can cause digestive upset, they don't digest dairy very well. I would concentrate on fluids until she's well hydrated. If she starts feeling better then she'll eat on her own. Tubing fluids can be faster, and generally you get them hydrated first before...
With all the losses, it would be a very good idea to find out for sure what is going on. Maybe Marek's, but other things can often look a lot like Marek's and are not. So it is a really good idea to get confirmation before assuming. Marek's can be manageable, but losses will be higher. But...
Breast bone is the long, thin keel bone below the crop, see image below.
If she's very thin then something has likely been going on with her for a while. Do you know when she last laid?
You said you lost a bird to Marek's disease, do you have that confirmed in your flock?
If that is the case...
The dropping looks fairly normal, a bit dry. So definitely get fluids in her. I would work on getting her well hydrated before worrying about getting her to eat. You can try offering some scrambled egg or cooked chopped egg to see if she will eat that. Some birds will eat canned tuna. There...
Do you know when she last laid? Has she always laid normally, ever any issues? I would not splint the leg unless you feel a fracture. First thing I would do is get her on a b complex or super b complex tablet or capsule, once a day. Human ones, any brand. Just put in her beak and push it...
I also am concerned that it may be a tumor or cyst. Tumors have a lot of blood supply and will bleed when opened. They can be very slow growing or very fast growing. It may have spread to the skin or just caused a rupture from the pressure. Also could have been pecked or caught on something...
Glad you were able to get it taken care of. She will be much happier, and she won't miss it. Combs usually heal up pretty fast, so shouldn't take long.
I agree with @azygous. Combs don't "grow back", but sometimes the injured part can heal reattached if you can get it to stay long enough. They do tend to heal relatively quickly, so fingers crossed. If it doesn't heal that way, then based on your picture, I would probably dub it. If it...
Everything you said/experienced is true. With chicks, it's better safe than sorry, particularly if you see blood in droppings or if they are acting off or lethargic. There are about 7 strains of coccidia that affect chickens, some are more virulent than others, and some do not present with...
The advice to use supplements after treatment with Corid is generally to boost thiamine, which can sometimes be lowered during treatment. So anything that has thiamine in it is appropriate. Having said that, most of the time there is not an issue and using regular feed is enough. Since the...