Welcome to BYC.
There are some general, common traits to look for in sexing young chicks. Some things are specific to each breed, but other things are common to most single combed chickens.
The males will often feather in a bit slower and will often not show much tail length, at 5 weeks, while the females often feather in more quickly and grow a slightly longer tail at 3 to 4 weeks.
At 6 or 7 weeks, the males and females often differ in the growth and color of the comb. The comb of the males often grows much quicker than the female. At 7 weeks, the males comb will often turn red. The female comb doesn't grow very much, at this age, and does not turn red until much later, just before she matures.
The males at 7 weeks will often begin to grow small, red wattles under their beaks. The female, again, do not grow red wattles until closer to maturity. Remember, these are just broad guidelines.
The males often stand taller, hold the head's high and are on alert. Often, there is a head shape difference between males and females that experienced keeper of a particular breed can distinguish through being familiar.
The males are young cocks, so they have thicker, longer legs and feet which gives their walk a different look from the females. Again, through familiarity, the walk becomes noticeable over time.
Hope this helps. Careful observing and noting these small differences all assist in the process of distinguishing.
