How do you upgrade the cage in farm frenzy 3?

To upgrade the cage in Farm Frenzy 3, you need to collect a specific number of resources, such as eggs or other products, during gameplay. Once you've gathered enough, access the upgrade menu by clicking on the cage, and then select the upgrade option. Each upgrade increases the production capacity or efficiency of the cage, allowing for better resource management. Make sure to plan your upgrades strategically to optimize your farming operations.