How old? Best Guess

[Alagirl]

I bought my chicks last week. and they are growing crazy fast, the wings are already feathering up.
what is the best guess as to age (Stupid me, I should have asked but I was thinking about everything else...)
I am considering to put them in the 'play coop' while I clean up the brooder box.
They have been given some grit.

 

[Wezdin]

Pictures would be great, it does depend what heat source you used. A brooder plate will make them feather out faster.

 

[3KillerBs]

It's incredible how fast they grow.

This thread of mine from last year has week-by-week photos: https://www.backyardchickens.com/threads/introducing-the-ideal-dozen.1469451/

 

[Alagirl]

Pictures would be great, it does depend what heat source you used. A brooder plate will make them feather out faster.

Most interesting. I indeed use a brooder plate.
I know, I know, I need to post some pictures I took a few buuuuttttt.........
you know.