When can you feed oats or scratch to my chicks and ducklings?

[Triplell]

My chicks are 4 weeks old and my ducklings are 3 weeks. I am wanting to Give then something to forage for. Their main feed is flock raiser. What do think is a good age?

 

[Laurie's Silkies]

When I have little chicks I grind up regular Oatmeal into a fine, but easy to eat powder and chicks go crazy for it. offer it once a day only because it's not a balanced diet. otherwise they should be eating their Chick Crumbles. It's something different, and breaks up the bordom of always eating their crumbles and they LOVE IT!!