1. Proper Nutrition:

• High-Quality Feed: Ensure the hens are fed a balanced, high-quality layer feed that contains adequate amounts of protein, calcium, and vitamins. Protein helps hens produce larger eggs.
• Calcium: Ensure hens have access to sufficient calcium, as it is essential for strong eggshells and can sometimes influence the overall egg size. You can provide oyster shell or limestone.
• Omega-3 Fatty Acids: Including Omega-3s in their diet can also help with egg quality. This can be done through flaxseed, chia seeds, or fish oil.
• Fresh Vegetables & Fruits: Provide additional greens, like spinach or kale, and fruits such as berries or melons. These add important micronutrients.

2. Adequate Space:

• Room to Roam: Ensure your hens have enough space to move around. If hens are stressed or cramped, they may produce smaller eggs.
• Comfortable Nesting Area: Make sure the nesting boxes are clean, comfortable, and quiet, as stress can negatively impact egg size.

3. Health and Maintenance:

• Parasite Control: Regular deworming and keeping hens free from external parasites (like mites) ensures hens stay healthy and strong, which may lead to larger eggs.
• Vaccinations: Ensure your hens are vaccinated to prevent diseases that could stunt egg production.

4. Light:

• Proper Lighting: Ensure hens have access to adequate lighting, especially during shorter days. A consistent 14-16 hours of light a day can help regulate their laying cycle and support larger eggs.
• Natural Light: In some cases, natural light can be sufficient, but if you're in an area with long winters, adding supplemental lighting may help.

5. Breed Selection:

• Some chicken breeds naturally lay larger eggs than others. If you are looking to produce larger eggs, consider choosing breeds known for this trait, such as Leghorns, Australorps, or Rhode Island Reds.

6. Reduce Stress:

• Stress factors such as sudden temperature changes, loud noises, or overcrowding can negatively affect egg size. Ensure your hens have a calm and comfortable environment.

7. Age of Hens:

• Younger hens tend to lay smaller eggs initially, but as they mature, their eggs usually increase in size. A hen will typically lay the largest eggs in her second year of laying.

By focusing on these factors, you can help encourage your hens to lay larger eggs.