Why are my budgie's foot toes curling? Could it be vitamin D?

Thanks for reaching out about your parakeet and including photos. The feet deformities are likely developmental problems but could also have an underlying viral etiology. Same for the feather loss. A veterinary visit could help with some diagnostics but keep this bird separated from other, if viral could be contagious. Good luck.

You really should get him to your vet for an exam. Gout is a very strong possibility. Gout is the accumulation of uric acid crystals in body tissues, especially the joints. Gout can cause difficulty perching due to painful swollen joints. It is a common problem in pet birds, although it is different than the disease in people. In birds, gout is often associated with kidney failure and treatment aims to address both the painful joints and the underlying disease. Other conditions can also cause a bird to have a weakened grip. Arthritis can affect the toes. Many birds develop a foot infection called pododermatitis or “bumble foot”. Nutritional deficiencies will play a role in the development of many of these conditions. Make sure your bird has no exposure to lead or zinc. Some neurologic problems cause similar signs and should be ruled out. In addition, older birds may develop tumors that will impact the ability to walk or stand. As you can see, any number of conditions can result in his difficulty with his feet. I would recommend that you start by having a physical examination performed by a veterinarian experienced with treating birds. Your veterinarian will evaluate him and make treatment recommendations based on the diagnosis.

Thanks for reaching out about Pino and including a photo. The foot appears deformed. If there a local wildlife rescue group that can assist? This could be due to dietary deficiencies, improper husbandry or other causes. A veterinary visit is recommended if a rescue group can not be identified. Good luck.

Thanks for reaching out about Pablo. This could either be a leg injury (fracture, luxation, neurologic) or an enlarged organ (kidney, testicle) placing pressure on nerve to that leg. A veterinary visit is recommended to assess and provide a diagnostic/treatment plan. For now, remove perches and place a thick towel on the bottom of the cage on which to stand. Place food and water within reach. Good luck.

Thanks for reaching out about your budgie and including photos. How was the fungal infection diagnosed? Fungal infections usually affect the respiratory or gastrointestinal tracts and not neurologic issues. Arthritis or articular gout are possible and radiographs are recommended to assess. Anti-inflammatories could help relieve discomfort but blood work should be taken prior to long term medications. Removing perches or providing broad platforms and climbing ladders, could make perching more comfortable for birds with disabilities. Good luck.

Be sure that Rio's toenails are not overgrown as this can cause abnormalities when standing or perching. Also make sure he has several purchases of different varying diameters and textures in his cage to help encourage proper grip and strength. It's hard to say if what you're describing is abnormal or just a normal variation. If you would like to repost your question again with pictures that may give us a little bit more information to help.

Based on the one picture and the age of the bird, it looks like hyperkeratosis of the feet potentially from vitamin a deficiency. I would have the bird looked at by an avian veterinarian. Bring in a fresh fecal sample and expect to have some blood drawn and sent out for analysis. This would be a good place to start.