What are the odds I have all roos

Schroeder

Crowing
14 Years
Nov 9, 2008
578
41
264
Central Indiana
My Coop
My Coop
My first ever hatch of Jumbo coturnix will be 5 weeks old in a couple of days. They seem large, strong and healthy. I only hatched 10 of 57, and 1 of them died early. I am not seeeing any spots on the breasts of the 6 goldens and 3 browns. At least 3 of them are crowing. I am concerned they may ALL be males. They were shipped eggs from a quality breeder on this forum. The only explanation I can find for the poor hatch besides the hazards of shipping are that I only let them settle for about 10 hours.

The odds against a random hatch of all males are astonomical. If I have all males, it seems to me there has to be some environmental factors at work. Has there ever been evidence that hatching at less than ideal temperatures or humidity results in more of one sex than another?
 
I had pretty crummy hatches with shipped eggs this year as well. 40% on both sets (one set of 20, one set of 50). My home hatches are all above 50%. I had assumed that it was because my shipped eggs were all sent early in the year (Febish). My "eating eggs" have yeilded better hatch rates than shipped hatching eggs. The local auction eggs all seem to be doing much better as well. I have a dozen chicken eggs that were just sent out this morning, so I suppose we'll see. Maybe the USPS is just sabotaging the eggs so that we have to order more, thus providing them with more business (joking). Out of the 20 coturnix eggs that were sent, I had one hen and six or seven roos (I can't remember now). My buttons had better luck. I had to trade in more females than males to keep my fertility up. I had 11 hens and 8 roos.
 
I just had a pretty decent hatch out of 69 eggs I hatched 45 I lost a couple during the first week I am down to 42 the first 6 I picked up were roos LOL a lot of them about half are either white or tuxes I am going to have to just wait on most of them. but out of 8 brown coturnix I have found one hen so far
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out of about 14-16 goldens I do not see a hen yet LOL good luck on some late bloomers
 
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1. Has there ever been evidence that hatching at less than ideal temperatures or humidity results in more of one sex than another?
2. Statistically, over the long haul, should there be an equal number of males and female?
 
All roos or all pullets would be unusual. One time I let a hen set and she hatched out 13 and 9 of them was pullets. A friend of mine hatched 11 last spring and got 8 pullets. It sometimes can be the other way around though. I believe in the long run you would get slightly over 50% pullets. I also think it also depends on the daddy rooster.
 
I'm not sure if anything would change the DNA of the egg.

Also if your worried about letting them sit for only 10 hours, what should they really sit for. If you browse around I see anywhere from 4 to 24 hours.
 

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