How to raise Backyard Chickens: [CHICKENS-101] rain and silkies

It started lightly raining so I told the blue pen silkie girls to go bed. They ran behind their shade and rain shelter and tried to hide from me. You know what?  I think these stinkers thought they were going to spend the night outside, rain and all. There's a little feed and a water dish outside, 2 rain/shade shelters. They like to climb in under their grass and make nests and scratch. Wonder if they think they are wild chickens in the jungle grasses and weeds? In their double and triple fenced, covered, buried fencing pens. LOL!  I should have looked for eggs under the shade shelter with a tarp.
My whites have been trying to hide eggs from me outside in their shade shelter too. What is it?  I don't take their eggs from their nests inside unless they are not   fertile.
The teeny weeny reds from the Netherlands hide so they can stay out too, I have to go get them. They come in when it is not raining. Do you think they are smart enough to know when it is going to rain the next day and that I shut their in and out doors at night to keep them in? 
Cathryn     rainbowsilkiesTM Michigan