chickens are known to carry salmonella in their droppings, so to me its not worth the risk of making your tiels sick

 

Salmonella is shed in the poo of humans & a lot of animals including parrots, reptiles & dogs. Would the salmonella from one animal be worse then the salmonella from another? Also here is a site that I found that talks about salmonella in chickens.

http://www.mypetchicken.com/backyar...d-chickens/chicken-help/Is-Salmonella-a-concern-with-backyard-chickens-H19.aspx

 

Salmonella from any of those animals is potentially lethal to cockatiels.

 

I wouldn't do it. Each bird has a different diet and it would be way too much work to separate that. They also have different energy levels / personalities so I would be afraid of fights.

 

It wouldnt be hard to just partition off a section for the tiels with an aviary that big.Personally I think chickens can be pretty vicious, they will eat any baby birds that fall to the ground.Plus chickens do get up pretty high when they want to and could easily raid the nests of your tiels or the very least stress them out.My chickens always managed to get up in the rafters at night to roost.Never could figure out how they could get up there.
My cats were afraid of our chickens.They would peck at and eat anything that moved too.

 

I wouldn't do it - my chickens are nasy buggers and are very mean. also someone gave us some ducks (a mommy and 13babies) so in a pinch i put them in the outside avary - mommy duck attacked and killed one of the birds. so even the most docile pet can be a killer.