Hens can impregnate themselves?? Updated

[g8rvet]

Yeah research shows the sperm is viable up to 30 days. No offense but where did 10 days come from?
 

Any research? Studies? Actual evidence it's only 10?

No offense but I find this to be an assumption.

Extrapolation from mammals and like you said, not accurate.  30 is pretty well accepted and it is quite possible it may be longer. 

[GobbleNut]

30 is pretty well accepted and it is quite possible it may be longer. 

In the past, the accepted length of time hens could store viable semen after being bred was "up to" 60 days, plus or minus. Not sure how "they" determined that...and it seems a bit implausible to me...but that was the accepted (or at least speculated) number at that time.