I have no idea about sexing, but I've been working with a runted chick that grew quite slow (and relatively normal behavior, just seemed less lively overall than the rest) and I felt like it had an issue with eating. It never seemed to properly pick up food when it did eat, so I'm not sure if it...
(1) Are you new to chickens / when did you first get chickens?
Got my first 6 about 7 years ago, still have 2 of them.
(2) How many chickens do you have right now?
Currently have 15, counting the newbies.
(3) What breeds do you have?
Barred Rocks, Salmon Faverolles, Easter Eggers, Australorp...