That sitting posture can mean the chicken is simply weak from hunger and not strong enough to stand. Or, as @Laura_BelgianBantams_63 mentioned, it could be Marek's. And everything in between, including coccidiosis.
I always suggest life saving measures first such as giving warm sugar water and Poultry Nutri-drench to revive the chicken. If you see that the chicken has managed to recover some strength, then we move on to trying to come up with a possible diagnosis and treatment.
Please be aware that we can't really make a diagnosis with absolute certainty from out here in cyber land. We can only ask questions, gather information to identify clues, and make educated guesses.
Check the crop for over fullness and if it's hard and lumpy, it could be impacted. This can happen when the chicken hasn't had access to adequate grit.
A stool sample from this chicken given to a vet to run a fecal float test for internal parasites can go a long way in identifying a problem as well as ruling this out.
By the way, you can safely inject fluids and liquid food into a chicken's crop as long as you understand what you're doing. As @Sommano mentioned, there is indeed two openings in a chicken's throat, the trachea and the esophagus. Knowing where each is located will enable you to safely syringe fluids into the esophagus as this photo shows. The airway (trachea) is in the center behind the tongue and the esophagus leading to the crop in on the chicken's right side of the throat.
I always suggest life saving measures first such as giving warm sugar water and Poultry Nutri-drench to revive the chicken. If you see that the chicken has managed to recover some strength, then we move on to trying to come up with a possible diagnosis and treatment.
Please be aware that we can't really make a diagnosis with absolute certainty from out here in cyber land. We can only ask questions, gather information to identify clues, and make educated guesses.
Check the crop for over fullness and if it's hard and lumpy, it could be impacted. This can happen when the chicken hasn't had access to adequate grit.
A stool sample from this chicken given to a vet to run a fecal float test for internal parasites can go a long way in identifying a problem as well as ruling this out.
By the way, you can safely inject fluids and liquid food into a chicken's crop as long as you understand what you're doing. As @Sommano mentioned, there is indeed two openings in a chicken's throat, the trachea and the esophagus. Knowing where each is located will enable you to safely syringe fluids into the esophagus as this photo shows. The airway (trachea) is in the center behind the tongue and the esophagus leading to the crop in on the chicken's right side of the throat.
