Identifying fertile Eggs when porous

[Missyktsm]

Hi! I'm new to incubating and need a little help with something...

I have 42 LF Cochin eggs the bator that I picked up from a local breeder who has show quality birds. I checked the eggs as I placed them in the bator and most of these eggs are fairly porous. Today is day 4 and I'm candling later...actually, probably as soon as I get some advice lol.

My question is; How can you tell if the egg is fertile and developing with porous spots all over it? And...are Cochin eggs usually porous or have I maybe gotten a bad batch? I've looked at tons of candling pics and my eggs are nowhere near as clear as pics where you can plainly see veins and an embryo and I'm pretty sure I have blood rings on three of them.

Any help would be greatly appreciated.

 

[Silkies~Polishes]

How dark are your eggs? Try a brighter flashlight. Also, 4 days may be too early, try checking again in a few days, by then if your flashlight is bright enough it will be very clear.

 

[Missyktsm]

I bought a very bright LED flashlight so it wouldn't heat up while candling. The eggs are light brown. I'm just having issues determining if any the spots I'm seeing are the porous shell, or something in the egg.