By Dr. Maral Rahmani
PoultryMed Veterinary Services
March 2025
Scaly-Leg Mites in Birds
Scaly-leg mites are tiny parasites that infest various bird species, including chickens, turkeys, pheasants, partridges, and many passerines. Knemidocoptes mutans is the most common species affecting older birds, completing its entire life cycle on the host.
Transmission and Life Cycle
Mites spread through direct contact between birds. Female mites burrow into non-feathered areas, particularly the legs, comb, and wattles, where they lay eggs for about two months. The larvae hatch and mature, continuing the infestation.
Signs of Infestation
- Thickened skin and crusty lesions on legs
- Lameness due to severe scaling
- Loss of toes in advanced cases
- Reduced feed intake
- Decline in egg production
Prevention and management
- Cleaning and disinfecting perches and nesting areas
- Isolating affected birds to prevent spread
- Providing proper nutrition to support recovery
Early intervention is key to minimizing damage and maintaining flock health.
Treatment
While products like Vaseline and coconut oil in small flocks can aid in suffocating mites and softening crusts, they are not a standalone cure and should be used alongside other treatments for effective mite control.
Consulting a veterinarian is essential when treating laying birds, as some medications can leave residues in eggs, potentially making them unsafe for human consumption. A vet can help determine the best treatment while ensuring egg safety.
