The weirdest I've seen is that you can tell whether an egg is fertile by swinging a needle suspended on cotton above the egg - a twist on the myth that you can tell the gender of a human baby by the same method.
eggs sperm penetrate chicken How do
Regulation of the length of the fertile period in the domestic fowl by numbers of oviducal spermatozoa, as reflected by those trapped in laid eggs. Further barriers to sperm prior participating in the process of fertilization include sperm release from the SST and subsequent transport to the infundibulum, and their interaction with the ovum reviewed in [ 69 ]. On alternate days, fresh eggs were subjected to SEP analysis and incubated eggs were subjected to fertility analysis.
The Rooster Does His Part
If you decide you do want a male in your flock, consider buying a " hen saddle " which will help protect the hen from the worst excesses of a roo's advances. Hens that are sick, old or not even fertile are of course not of interest for the successful rooster.