Which parasite condition is associated with symptoms of ruffled appearance and trouble eating?

The condition associated with symptoms of ruffled appearance and trouble eating is known to be Frounce, which is caused by a parasitic infection involving Trichomonas gallinae. This parasite mainly affects birds, leading to symptoms such as ruffled feathers, loss of appetite, and oral lesions. The ruffled appearance can indicate the bird is not feeling well, while trouble eating often arises from discomfort caused by sores in the mouth or throat due to the infection.

Aspergillosis typically involves respiratory issues and may not specifically manifest as a ruffled appearance or difficulty eating, making it less likely to be the correct choice in this case. Roundworms can cause digestive issues but are associated with other symptoms and don’t specifically lead to the ruffled feathers or eating difficulties observed in Frounce. Lead poisoning presents severe neurological and physiological symptoms but would not primarily manifest in the described manner. Thus, the correct association with the symptoms provided is indeed Frounce.