Hi, my name is Laurie, and I have been following this thread at BYC's emailed invitation for awhile. This is a GREAT experiment. I did something like this as a kid, MANY years ago, with my Mom's tomato worms: at the end of the summer, the sphinx moth larvae buried themselves in a box full of what I believed to be the perfect dirt for them, and in the spring they "hatched" and emerged - not as sphinx moths, though, but as little devils, indistinguishable from my little baby brother. Ha ha, that was only a (recurring) nightmare; they did indeed metamorphosize and hatch into moths, but the moths were so deformed as to not be viable. The humidity in their dirt was way off, either too dry or too wet, and I did not care enough about the worms to try the experiment again.
But with my chicks, I am obsessed. I am today watching over the last of some Silkies to hatch over the past three days. This is my second hatch ever, and it is from a homemade incubator. I did many things wrong (like lock them down a whole week early, for example), and i am struggling with humidity issues even as I type. But 12 out of 14 pipped their shells, and all but 2 of those have hatched and fluffed out. This is day 23. OK. What I'm trying to point out is that incubation need not be cut and dried, with inflexible rules. I appreciate - love - Bekissed's sense of humor and perspective. I wish I had it, but i have only enough to appreciate it. Truth be known, I am a sore loser. Persistence will get you through day 23, I'm sure.
I have some ideas that might help with the "nest." But first you have to remember that a brooding mama hen is basically a THERMOSTATICALLY controlled heat source. And yes, she is insulated and provides controlled humidity.
I made/make my incubators from styrofoam boxes lined with Reflectix (aluminized bubble wrap). You can use this Reflectix to line anything; it helps to keep temperature variation to a minimum, and it is easy to work with. I think nests would benefit from its incorporation, but it needs to "ventilated."
The other thing I use is a digital electronic thermostat. You could EASILY cut the plugs from two heating pads and use them as heat sources for the top and bottom of your nest. You simply connect them together and then to the output of the thermostat switch. These electronic thermostats are the wave of incubating future. They come with a temperature probe that you can put in your homemade or silly putty egg and place with your hatching eggs. The temperature variation with these thermostats is rarely greater than 1/2 of a degree. Mine turns on at 99 and off at 100, but you can play with this number. There are different models, and they all can be calibrated. None have good directions I hear. This is as close to a broody hen's constant infallible temperature control as you are ever likely to get. If you don't understand about wiring, get some help - or get a book on wiring. The thermostats sell on
ebay for less than $14.00 if you take the time to look.
Humidity, ugh! You can wick moisture into your substrate. I like to use basic Carefresh as a humidifying agent. It absorbs a LOT of water and, kept in trays in my bators, will maintain humidity levels for awhile before I have to replenish water. You could use things like Depends or Hydrogel in your soil mix to keep it at high moisture levels. I use mortar mixing tubs to hold the substrates for my reptiles. I have yet to see it mentioned, but you can use that large plastic canvas needle pointers use, for keeping your eggs and chicks supported and separate from your moist soil. I don't like working with wire or hardware cloth, so I use this stuff a lot. That latex shelf liner seems a lot like shaking to me, and I use it on top of the plastic canvas.
I did not turn or use a turner for my current hatch; I simply propped up one end of the box, then the other, at random intervals, more or less. This current hatch - 12 out of 14 - is not too bad. This "turning " method was totally experimental this time, and I will be using it in the future. With eggs placed in either a paper carton or plastic tray, it takes the hassle and expense out of egg turning. Easy do and it works.. It was a good thing to try.
Hope these suggestions are helpful in one way or another. PM me if you have questions. I, too, am afraid of my Hovabator, but, experiments being the great things that they are, I might try experimenting with it. Yours
