Veterinary advice should be sought from your local veterinarian before applying any treatment or vaccine. Not sure who to use? Look up veterinarians who specialize in poultry using our directory listing. Find me a Vet

Immature Or Defective Shell Gland

Hens may have an immature or defective shell gland, causing them to not lay or to lay irregular eggs.

Clinical Signs

Misshaped eggs
Calcium deposits on eggs
Calcium coated eggs
Speckled eggs
Shell-less eggs


  • History
  • Clinical signs
  • Physical exam
  • Radiography


Surgery : Talking with your veterinarian about spaying the chicken may be the best alternative, depending on the extent of the defect.:


Scientific References