Bad Eggs The egg on the left shows a ring at 6 days. This ring is formed by concentrated bacteria which has invaded the eggs' membrane. It can become present very early, or after the peep has already started to form, as in the picture on the right. In the picture on the right the ring, or portion of it, can be seen at the bottom of the egg with the expired peep in the middle.
How do I candle eggs? I Shine a bright light through the egg. Candling is not a specific art.
It is more of a comparison, meaning all the eggs of the same age should look the same. It is something best learned by doing it, and really is just as simple as you make it. You cannot hurt eggs by candling them (short of dropping them). They can be out of the incubator for a half-hour without any harm. Candle every day if you like, after day 3 you should see something. At about 8 days, you can see the peep wiggling and kicking in his egg. We once saw a peeps' heart beating while candling!
Good Eggs On the left, you can see the "spider" of veins growing away from the peep. This egg is at 6 days. You can see this spider in a smaller version at 3 days. The egg on the right is at 2 weeks. You can see the clear spot beneath, with the yolk and peep floating at the top.
More Bad Eggs For a different reason. The egg on the left shows a blood spot.
In my experience an egg with a blood spot will not hatch. They will go bad and blow up, though.
The egg on the right at 6 days shows "clear". It is infertile, or too old to germinate.
Homemade Candler Recipe
1- 60 watt sealed beam flood light bulb
1- ceramic light base
1- old lamp cord
1- 4X4 utility box
1- Romex connector
1- piece of scrap wood for a mounting base
1- cardboard box with a small hole cut in it
1- roll of black electric tape
Throwin' it together...
1.) Punch out a hole in the 4x4 box, install the romex connector, screws on the outside.
2.) Pass the lamp cord through the connector with about 6" inside the box, ends bared about 3/4".
3.) Screw down 4x4 box to your piece of wood that you are using as the base.
4.) Tighten down romex connector screws. If lamp cord is loose, you may need to make a number of wraps with electrical tape on the cord to increase it's diameter, so the connector can get a good bite.
5.) Attach the lamp cord to the light base. One wire goes on each screw, it doesnt matter which wire to which screw.
6.) Screw down your lamp base, use screws provided with the base.
7.) Screw in your light bulb, find a box, cut in a small hole, and start candling. Use some sense here, the candler becomes VERY HOT, make sure the box is big enough not to catch fire!!! Don't leave the candler unattended, EVER!!!
This page was last updated on: January 15, 2010
This site was constructed by me, Scott Shilala, with help from the poultry hobbyist community, and support from my wonderful wife, Kelly Jo.
Yet Even More Bad Eggs The egg on the left shows a blood spot incubated to 8 days. You can see the bacterial ring forming at this point. Soon this egg will start to "weep", and if it isn't caught in time, it will explode into a stinky mess. The egg on the right shows highly defined pores.
Eggs that look like this under candling have a slim chance of hatching in my experience.
I've noticed that it mostly depends on the severity of the porosity.
The brighter the light the better, when it comes to candling!!!