• Cost of birds: This can vary depending on the breed and the source. Some breeds are more expensive than others and buying from a hatchery can be more costly than sourcing from local farmers.
• Feed cost: This is a major cost component in poultry farming. The cost of feed can vary depending on the ingredients used and the cost of the feed itself.
• Housing and equipment: The cost of building or buying poultry housing, feeders, and drinkers can vary depending on the size, materials used, and the scale of the operation.
• Veterinary services: Regular veterinary check-ups and treatment can add up, especially if there are outbreaks of disease.
• Labor cost: The cost of labor for caring for the birds, including feeding, cleaning, and monitoring their health, should be considered.
• Miscellaneous costs: Other costs such as transportation, marketing, and insurance should also be taken into account.

It is important to keep accurate records of all expenses related to the poultry operation to get a clear understanding of the total cost of rearing 100 free-range poultry in Kenya.