Shedding claws?

[Butterball]

Do chickens and/or guineas lose/shed/get new claws? I've had chickens for 8+ years and never noticed if they did. HOWEVER, four of our guineas (1 1/2 years old) have lost their back claws during the winter. I don't know what could have bothered them-they have been inside most of the winter. Just curious!

 

[DTchickens]

i don't know about guineas.. but i don't believe chickens shed their claws.. Their like our finger nails... they just grow and grow and grow until they break off/are cut... or worn down scratching through dirt etc

 

[firedove]

Did they get really cold at any point? Frostbite can take off the tips of their toes along with the claws