Originally Posted by TJordan
Well today is day 5 of my incubation. My 8 year old and I are doing a day by day video diary of this hatch for her 3rd grade class. They are studying penguins and the teacher thinks this comparison was a great idea. Granted both very different but still. 😊😊 so.... 40 eggs set on Jan 21st. Humidity gauge is acting up so I printed up an air cell chart and will use it to watch. Temp staying constant at 37.5 c dispite cold weather outside. A mice 8'x8'x6.5' tall BARN (can't call it a coop) has been built and a nice size 6' tall pin will house the birds until I get my privacy fence built and can skirt it with wire and concrete. Wish me luck.
If you can weigh all of the eggs somehow, checking the weight daily is really the better way to judge humidity. Every day they should lose 0.67% of the total original weight, but you can start with today's weight and be sure you lose 0.67% by the same time tomorrow. If the weight loss is not enough, reduce humidity by 5%, if its too much, increase by the same amount. Remember, humidity isn't the main issue, its weight loss, so the embryos will become small enough to move about inside the egg (which in turn means a big enough air sac to let the chick internally pip and breath till it gets enough strength to do the external pip.)
Air cell charts are notoriously vague...how big is the egg in the chart versus each of your eggs (which are likely different sizes).
How are you planning on brooding the chicks till they can go outside?