Rounded eggs = baby hens???

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Okay, I just skimmed this article and didn't see that sentence. I may have just missed it, it may have been removed. I did read at the beginning "This article needs attention from an expert on the subject. See the talk page for details. WikiProject Birds or the Birds Portal may be able to help recruit an expert. (September 2009)" so maybe some smart BYCers could contribute to this article.

I agree that if it were possible to know which eggs would hatch pullet chicks then the egg industry as well as commercial hatcheries would put this into practice. What I think is that since it's the hen who determines the sex of the chick, and since most hens lay the same types of eggs, similar in size, color & shape, and that some hens tend to make more of one sex than the other, then perhaps there have been some hens with a preponderance of pullet chicks laying distinctly rounded eggs. And if you collected & hatched those eggs, you'd tend to have more pullets hatch.

The best way to test this theory would be to incubate ONLY rounded, or pointed eggs in one clutch, and later see how many were of which sex.
 
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Oooh, I heard something about that, but never put 2 & 2 together!


I will be sure to let everyone know how my experiements come out. I have pretty much unlimited space for chickens, so can handle as many as I can produce.
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Okay, I just skimmed this article and didn't see that sentence. I may have just missed it, it may have been removed. I did read at the beginning "This article needs attention from an expert on the subject. See the talk page for details. WikiProject Birds or the Birds Portal may be able to help recruit an expert. (September 2009)" so maybe some smart BYCers could contribute to this article.

I agree that if it were possible to know which eggs would hatch pullet chicks then the egg industry as well as commercial hatcheries would put this into practice. What I think is that since it's the hen who determines the sex of the chick, and since most hens lay the same types of eggs, similar in size, color & shape, and that some hens tend to make more of one sex than the other, then perhaps there have been some hens with a preponderance of pullet chicks laying distinctly rounded eggs. And if you collected & hatched those eggs, you'd tend to have more pullets hatch.

The best way to test this theory would be to incubate ONLY rounded, or pointed eggs in one clutch, and later see how many were of which sex.

Use the finding tool on your browser. Is at "Chickens in history" part of the article.
 
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I agree with this.

I don't believe that the shape of the egg has anything to do with pullets vs. roos; it's always 50/50 or like others have said, hatcheries would be all over this. Creulty aside, incubating and disposing of so many male chicks is expensive for them and it's all about the bottom line for hatcheries.

I've found that some of my hens definately throw more pullets than cockrels and I will always choose to hatch those eggs. I have 2 frizzled EE hens that have thrown nothing but frizzled pullets. Another of my mixed-bred hens also throws more pullets than cockrels. My advice would be to study the ratio of males to females you hatch from a paticular hens' eggs and go from there.

ETA: Both those frizzled EE's lay a more elongated, pointed egg and I always get pullets from them. My mixed bred hen lays a round egg and I usually hatch about 75% pullets with hers. The rest of my hens are new layers, so I haven't had a chance to study them, yet.
 
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I will study the ratio of males/females from certain hens AND from round/pointy eggs. I am going to really enjoy this "study".......
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It says,

"What is claimed is:

1. A method for determining the sex of a fertilized chicken egg, comprising: placing the fertilized chicken egg in a horizontal direction on an egg stand which is downwardly concave and has a substantially egg-shaped periphery, and which has a mirror-finished surface; taking an image of the whole fertilized chicken egg from directly above the fertilized chicken egg placed on the egg stand; inputting the taken image into an operation apparatus; generating two-dimensional contour image data of the fertilized chicken egg from the inputted image; extracting parameters which represent a shape of the fertilized chicken egg from the two-dimensional contour image data; and determining the sex of the fertilized chicken egg by using said extracted parameters."
 

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