It's not uncommon for broody hens to push hatching eggs out of the nest, especially if they sense that the chicks are struggling to hatch or if they perceive the eggs as not viable. While this behavior may seem puzzling, there are a few reasons why a broody hen might push a hatching egg out of her nest:

### 1. Instinctual Behavior:

#### Protective Instincts:

Broody hens have strong maternal instincts, and their primary goal is to ensure the survival of their offspring. In some cases, a hen may push a hatching egg out of the nest if she senses that the chick inside is weak, sick, or unlikely to survive.

### 2. Optimization of Resources:

#### Resource Management:

By pushing out hatching eggs that she perceives as non-viable, the broody hen can conserve her energy and resources for caring for healthy chicks that have successfully hatched. This behavior is a survival strategy to prioritize the strongest offspring.

### 3. Environmental Factors:

#### Nest Cleanliness:

A broody hen may push hatching eggs out of the nest to maintain cleanliness and hygiene within the nesting area. Removing hatching eggs that have broken shells or membranes can help prevent the spread of bacteria and maintain a healthy environment for the remaining eggs and chicks.

### 4. Stress or Disturbance:

#### External Factors:

Stressful or disruptive conditions in the nesting area, such as loud noises, predators, or disturbances from other animals, may cause a broody hen to exhibit abnormal behavior, including pushing hatching eggs out of the nest.

### 5. Lack of Space:

#### Nest Crowding:

If the nest is overcrowded with eggs or chicks, the broody hen may push hatching eggs out of the nest to create more space and ensure that the remaining eggs and chicks have adequate room to hatch and move around.

### 6. Intervention:

#### Human Interaction:

Occasionally, human intervention or handling of hatching eggs may cause a broody hen to become distressed and react by pushing the eggs out of the nest. Minimize disturbances and handle hatching eggs with care to avoid triggering this behavior.

### Conclusion:

While it may be distressing to witness a broody hen pushing hatching eggs out of her nest, this behavior is often driven by instinctual maternal instincts and survival strategies. In most cases, it's best to allow the hen to continue caring for the remaining eggs and chicks, providing her with a quiet, secure environment and necessary support as needed. If you have concerns about the hen's behavior or the health of the chicks, consult with a poultry expert or veterinarian for guidance and assistance.