they are bathing
no
Yes At least make sure they have access to it. The chickens will go to the coop about dusk as they do not wander about after dark. The coop is their "safe" place.
nope has to be sawdust :)
sawdust and sometimes sand.
To separate sawdust and iron fillings, you can use a magnet to attract and separate the iron fillings from the sawdust. The iron fillings will be drawn towards the magnet, allowing you to easily separate them from the sawdust.
Put the dog on a lead whilst passing chickens and every time your dog tries to go them pull back on the lead and use a Stern "NO"
sand, soil
a bowl!
chickens can freeze in both winter and summer if you have a freezer to put them in.
chances are they put things in a cellar or under sawdust to keep it cool
First, take the guinea pig out and put it in a box or carrier. Use gloves and a shovel to deposite all the contents of the cage into a bin bag. Spray with pet-safe freshening spray. Wipe dry with kitchen roll. Take a lot of sawdust and sprinkle it around the cage. (fresh sawdust!) Take some hay and put it in the bed part. Put cage top back on. Put toys and food dish back in. Clip the water bottle on the side of the cage. Let in your guinea pig.
try a fence... around either the flowers or the chickens. if they are not your chickens, fence the flowers.