PLEASE HELP me?

why is the Presence of roosters, chicken, pigeon near the kitchen a health threat?
Poor foundation of the house a health threat?
and what are some recommendations for each problem thnksPLEASE HELP me?
I'll answer the medical part and leave the structural part to an architect or engineer.
The presence of the poultry types you mentioned close to a kitchen or foodstuffs (open) is dangerous because of an highly infectious poultry-born disease called psitacosis, which if untreated may be dangerous to lethal. Yes you can even get this from a parrot bite. Bird owners should take attention to this.
because...