Are These Wyandotttes?

[Saamigo]

Hello.
We got some new chickens. The 3 smaller ones are about 4 weeks old, and the 2 larger ones are about 5 weeks old? Not sure on them as they were larger when we got them. They are supposed to be Wyandottes,, but I am not sure. I don't know the sex of them either. We are very, very, new to chickens. We had some a couple years ago but gave them to our neighbors who were better set up for them. We want to build a great coop for them. I was just wondering if they are bantams or the larger type, and what colors they are. One is totally black. I saw a pic from a recent post that looks just like him/her. The 3 smaller ones, I can't tell what color they are going to be. The biggest looks like a laced? He/she is the only one with yellow legs right now. Any help would be greatly appreciated. We still have them in the barn in a run as the weather keeps changing here, and they still can get under a heat light if they want to.
Thanks.
Well, I can't figure out how to add pics. Any help with that would be great too

 

[jeremy]

 

[Attack Chicken]

To upload pictures scroll up to the top and click uploads.
Browse through and find the pictures your wanting to upload then click upload

Why kind of combs do they have? Wyandottes can have yellow or a smokey grey yellowish legs.

 

[Saamigo]

Thanks, I think I got it