I have found that mother nature and the hens own ability is often overlooked, I learnt long ago with horses, cattle, sheep, goats that they know best in most cases, thus I trust my chickens to know what the do.
When my hen went broody I pretty much let her get on with it. Even though she was young and first time mama. I just trusted her to know intuitively what to do, amazing really!
In fact I am amazed that baby chicks just know what to do to be a chicken! When a raven flies overhead they run, hid, and freeze! Amazing! ... Of course there will always be those who are just clueless

and those r the ones we protect.