I bought chickens for the first time last week, and one seems sick. It seems really low energy (sleeping most of the day with her head under her wing), but will the take her head out and look like she's gasping for breath. She opens her beak and stretches her neck upwards, looking like shes trying to clear her airway. No coughing or wheezing. She had a big lump to the right side of her throat, that made me think it's an impacted crop, but it looked like it was a bit too high up for that. It was very hard to the touch. I gave her coconut oil and water and massaged it, and it went down, but shes still gasping. Does it take a bit to resolve? Can it be something else? Infection? I cant smell anything when smelling close to her beak.