QWhy does using ‘dummy’ eggs help with egg laying and does it matter what they are made of?
AVictoria says: If having a cockerel (who will indicate the best nest site) is not an option, dummy eggs are used to prove a suitable, secure nest site and/or encourage broodiness. Crock or wooden eggs are better than plastic which is generally too lightweight to fool a hen. Dummy eggs do not help with laying: this is affected by day length and sufficient feed to allow for the health of the hen plus some left over for production. A good layer needs to be fit not fat, so just use layer pellets with a small amount of wheat (not maize, too fattening) in the afternoon as a treat.
Rubber dummy eggs