Age of cornish cross chicks PICS

[jdywntr]

I got 17 cornish rock chicks today at a local feed store. They were unsure of the age except "1-2 weeks". There are some that have longish wing feathers and tail feathers and others that have short wing feathers and no tail feathers.

Any ideas of age? Thanks.

 

[New peeps]

Definitely not experienced but I have 15 that are just now 2 weeks and they have lost a lot of fuzz and grown tail and long wing feathers in the last 2 days and are attempting to fly, if that helps.

 

[jdywntr]

Thanks for the reply and

I just want a guesstimate so that I know when to start changing their feed.