I didnt bring them home until they were a week old, they were at the school i work at for the first week. I guess they would have been held quite a bit by a few people but not for long periods.
We have got the chickens primarily as pets, so we are handling them a bit to get them used to us. I guess the two white ones became friendly within a couple of days. Esmerelda is on my knee within a minute of me squatting beside the box. I tend to spend time with them 3 times a day, when i clean the box, home from work and before bed. I make sure I hold each one every time, as some are friendlier than others but they are all getting better.
I dont know why really as Im told its not cruel but I am going to try not to clip their wings, so i am hoping if they are really chummy with us they wont want to go far. At the first time of them getting in any danger I shall be wing clipping though.
If yours arent that tame yet, initially I got my son to just hold his arm in the box, mainly because he was nervous and i didnt want him to drop one and also so they wouldnt feel threatened. It seems to have worked a treat for us.
Not sure about the sexing, I know there is a Maran parent, legbar and not sure of the other, though not certain of the mix as there were cocks and hens of both i believe. Combs are starting to grow, I noticed one seems to have longer hair developing on its head and the one i am sure is a maran has shorter feathers than the others, though I dont know if thats a breed thing rather than sex.
I had a 100w ruby bulb that blew on the first day I left them at a week old and used a 60w fireglow that night as it was all I had, so i kept listening to see if they were noisy due to being cold but they were fine, they are in the utility room though. The next day they were moving about well and not distressed noisy so we have kept with the 60w bulb and have seen no signs of them being cold. If they had gone in the garage as was initially intended not so sure i would have been so happy with only the 60w, but guess you have to watch and listen and they will let you know.