You did post to the correct place, but these birds are still too young to make anything more than a wild guess. Check back in 5 to 7 more weeks.
You can tell gender based on several characteristics: Posture, comb/wattle, voice, feet, feathers, and personality.
- A rooster will usually hold his head and tail straight up in the air, while hens keep their tails down and don't stand as tall.
- A rooster will have a large, red comb and wattle, while a young hen will have a smaller, pinker one
- A rooster will have a deeper, raspier voice than a hen, and begin crowing around 5-6 months of age
- A rooster will have larger feet than a hen
- A rooster will begin growing long, pointed, wispy feathers on his wing bow and saddle, and long, curved sickles in his tail, around 11-14 weeks of age. Hens will have rounded wing bow and saddle feathers, and no sickles.*
- A rooster will usually have a more aggressive and bold personality than a hen. This isn't always the case, though, so personality is one of the more unreliable characteristics to sex by.
*There are several breeds of fowl to which feather sexing does not apply. This includes Silkies, Frizzles, and hen-feathered breeds such as Sebrights and some gamefowl.