Although I am sure that my question has to have been answered many times previously, I have Googled ad nauseum without finding an answer.
I have 10 Light Brahma eggs, which are brown, in my incubator (located in my home office) that I candled late last night at about day 6.25. Now I could just wait and see what happens but I happened to luck out yesterday and got 11 turkey eggs for a test hatch - I get half the turkey poults. So, thing now is that if my chicken eggs are not good, I do not want to risk the turkey eggs.
I made a candling device from a table lamp, spaghetti sauce can, toilet paper tube and an LED light bulb (brighter than a 40W incandescent). My vision is not great. Anyhow, I was disappointed when I failed to observe an distinct spot or blood vessels. All I could see was a dark mass come by as I rolled each egg on its long axis. I thought it was the yolk. However, I candled three fresh eggs and found that I could not identify a similar mass - no sign of yolks at all.
Now I am a little baffled. I did not see what I expected to but, by the same token, each egg contains a dark mass that is not present in fresh eggs. My question then is that, on the balance of probabilities, is it likely that I have good fertile chicken eggs in my incubator .... or duds?
This is my first experience with an incubator.
Edited by Dennis Linton - 3/26/16 at 2:07pm