Mixed age Brooder & feeding.

[rosemarythyme]

I feed Starter until the bag runs out, whether that is four weeks or a long time after. When I switch I just switch, that's never been a problem.

This is how I precisely calculate when to switch feeds. When I'm out of starter, they're on grower. Works for me since I usually get roughly the same number of chicks each time (3 or 4) so I know I'll run out around week 6.