UH...

[little chick-y baby mama]

um... Just wondering, does the "piece of string to determine the gender" thing really work? Also on chickens?!

 

[MGG]

um... Just wondering, does the "piece of string to determine the gender" thing really work? Also on chickens?!

No, it doesn't.
Unless your breed is autosexing, you have to wait until they're 8-10 weeks old to tell gender.

 

[jher77]

You can spot white leghorn roosters about 3 weeks of age.