I say the 1st one is a roo and the 2nd one is a pullet, the first ones comb is really red but the 2nd ones is more yellow, and smaller less red wattles
first one male second one female, but I have had leghorns surprise me at 10 to 12 weeks (all hens one day and the next day wondering where the rooster came from). I have only had chickens for a year and half but i get a steady supply of leghorn chicks from the local schools that hatch in the classrooms.