Why did it finally become necessary for the hens surrender all their eggs?

The hens were compelled to surrender all their eggs due to the increasing demands and pressures from the oppressive regime they were under. This situation was portrayed as necessary for the collective good, as the eggs were to be used for the greater benefit of the farm, supposedly to support the community. However, it ultimately reflected the exploitation and loss of autonomy faced by the hens in a system that prioritized control over individual rights.