Sudden infertilty bantam cochins.

[huntinwidow]

I am stumped. I have hatched 8 or 9 batches of cochins in my bator this year with a 95-99% hatch rate. Now on the last 2 hatches none of the eggs developed at all. Why would this happen all of a sudden?

 

[SD Bird Lady]

Has your rooster been under stress? Has the weather changed such as being very wet? I know cochins can have fertility problems due to their "butt fluff" so wet weather would probably compound that. How old is your rooster?