Tender or delicate plants in the garden can be protected from chickens and other animals by simply placing an old birdcage over the top. It’s simple, free, and actually looks pretty nice!
Some ideas from Permaculture Visions for incorporating water into your garden design to add an extra dimension in both aesthetics and practicality.
Photos and a description of a very cleverly designed chicken coop.
A little more unusual than chickens and ducks, geese can provide several useful functions in the garden if you have the space.