Three small bantams..how fast do they grow?

[Red Barn Farms]

I know one for sure is a golden laced cochin. The other two I'm thinking easter eggers but not entirely sure. One however which is mostly gray in color can fly higher then any chicken i've ever seen for such a small age. I've watched it fly 6 foot in the air and land anywhere with ease. Is this common? Also, they are over 5 weeks old, Do you think they are still really small for that age?

 

[Jenny28]

I currently have some 8 week old bantams that are about the size of my two fists put together, so no- I don't think they are too small. Two of those w/ the masks look like OEG to me, but they move so quickly it's hard to tell.

 

[hdowden]

looks like a golden laced cochin and 2 oegb and no they are just right in size