Portable Pigeon Egg Incubator. 1.Set Up the Incubator. Place it on a flat, stable surface away from direct sunlight or drafts. 2.Set the Temperature. For most bird eggs (like pigeons or chickens), the ideal temperature is: 99.5°F (37.5°C). 3.Set the Humidity. Maintain humidity during most of the incubation period. 4.Turn the Eggs. Gently roll each egg 3–5 times a day (except the last 3 days). 5.Monitor Conditions. Daily Check temperature and humidity at least twice a day. 6.Candling (Optional).