Does chicken egg shape determine chick sex?
Perhaps you've heard the old wive's tale that
you can determine the eventual sex of a chick by looking at the shape
of the egg? A quick search of the internet will turn up
testimonials from dozens of chicken-keepers who are absolutely certain
that this method of sexing chicks works. Here's one
representative sample from Chicken
“My answer is yes you can tell the sex of an egg before it is even placed in an incubator. Several years ago I was told that the more pointed eggs would be roosters and the more rounded eggs would be hens. So I decided to do an experiment. I set 24 eggs in an incubator and hatched 20 of those eggs and they were all roosters except one. I currently try to use only the more rounded eggs for hatching and have about 75 % hens. This does not appear to be true for all breeds of chickens but does seem to work for the large breeds but not as well on bantams.” ~ Thanks, Donald R. Holbrook
"Long and pointed eggs are female; those that are round, or more rounded at the narrow end, are male."
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