fertilised

I’m getting a new rooster for my flock, what I want to know is how long should I wait for the new rooster to have definitively fertilized all the hens, before I try incubating. I currently have a gamefowl rooster as a protector but he recently became aggressive, so we’re rehoming. I definitely...

I have some silkies ive been trying to hatch now for 2 months with no luck. The eggs are fertilised (bullseye) but yet do NOT develop in the incubator, I have 3 pullets and 2 roosters, all have been laying for a little over 4 months. I collect when the eggs are freshly laid and warm so its not...