Because the bird is bigger, therefore meaning it affects the ecosystem.
Contaminated by what?
INGESTION.
Eating contaminated food and drinking contaminated water
People get typhoid mostly by eating contaminated food. Some times by drinking contaminated water.
If it was contaminated with Salmonella - Yes.
It is acquired by eating contaminated food.
It can hurt the ecosystem by eating the mammel food chain
Yes, Aids can be spread through contaminated blood being swallowed.
MERCURY
it keeps insects from eating it and water from damaging it
Food poisoning
There are many from plant eaters like cattle and rabbits. Fruit eaters and seed eaters like birds and chipmunks. Including meat eaters like humans, wolves and hawks.