No Chickens will eat hay and straw, they will also search under the bedding to find bugs and stray seeds.
No. Hay and straw is used for ground cover and absorbing droppings. The chickens will scratch and search the hay for bugs and errant seeds. They do not eat it.
I suppose they would if it was in doors and had pleanty of straw in it
Writing from experience I can say you don't "need" to but I would highly recommend it. putting some straw,hay, lawn clippings or another form of padding will reduce the number of eggs your chickens crack when getting in and out of the nest. Plan on your chickens laying their eggs in the most secluded nests if you aren't sure which ones they are pick the ones that are least convenient for you.
dwarf hamsters need the same bedding as normal hamsters which is straw or shavings which you can get in a pet shop.
Chickens don't grow. Plants grow. Chickens are born.
Wood shavings are best but straw will do assuming they are completely feathered. It's hard for little feet to scratch large straw around and search for food. Shavings offer better absorbing qualities and retain heat better than straw.
Many farms have a cage/hut with straw, which acts as a soft nesting site, where the chickens can lay their eggs.
A type of cheese from chickens
IDK
Chickens need the same things other creatures need.......food, water, and shelter from predators & the weather.
Any type of clean straw can be used. Many breeders use paper bedding with straw on the top to increase absorbtion. Personally, I use hay over paper.