The average consumer would not be able to tell. The germinal disc is so small on the yolk that it is almost invisible. Chicken breeders and farmers can point it out but unless you know what to look for you would not see it.
The one way you can tell if a chicken eggs is fertile is by holding a strong flash light behind it and if you see the embero it is fertile
When its just fresh there's no telling. After the hen has been sitting on it or has been in an incubator you can tell be holding it against a bright light (you can see blood veins in the egg) or put it in water; a fertilized egg will float, and a non fertilized egg will sick. A spoiled/ rotten egg will float as well, but it will be quiet old when that happens.
If they are round and plump. Infertile eggs also tend to be yellow. Even if the eggs are dented I would still put them in an incubator until they mold since they can still be fertile and produce perfectly healthy babies.
with a rooster, spur length is a good sign - the longer the spur the older the chicken. Otherwise, it's quite hard to tell. Maybe as the chicken gets older its feathers get shabby. Chickens are normally dispatched before they get too decrepit.
There are some scientific and high-tech ways to tell, but these aren't affordable for the small-time producer. The best way is still the old stand-by: put then in the incubator and then candle them OR you could crack one and see if there is a "bullseye" spot on the yoke. That would at least tell you that some of your quail eggs are probably fertile.
How can I tell is a buff Orpington chicken is male
Absolutely. They will also be able to tell where you bought the chicken from. The same is true for mayonnaise. You are an idiot.
The same way you tell in the U.S. A chicken is a chicken anywhere they are.
You could take to a lab or a vet they have these special machines that can tell if its fertile or not
this me and im going tell u about chicken i love chicken
If they have a comb
Usually by the smell first and then the chicken feels slimy.