Alan8, Welcome
Here is my two cents, the more the birds are outside and eating on thier own the better for you and the amount of poop-scoop'n you have to do.
As for the shed IMHO it is plenty large enough, I would however buy a wind driven turbo vent for the building to insure good air movement.
http://www.infolink.com.au/dirplus/images/infounits/138041.jpg
Here is my two cents, the more the birds are outside and eating on thier own the better for you and the amount of poop-scoop'n you have to do.
As for the shed IMHO it is plenty large enough, I would however buy a wind driven turbo vent for the building to insure good air movement.
http://www.infolink.com.au/dirplus/images/infounits/138041.jpg