Scientists say gulls around Australia carry superb antibiotic-resistant.
Silver gulls carry bacteria such as E. coli, which can cause urinary tract infections, sepsis and blood infections.
Research has raised fears that bacteria resistant to antibiotics, similar to superbacis that have affected hospitals, can infect humans and other animals.
Scientists have described it as an "opening" and "call for awake".
It is believed that birds have contracted the insects of garbage collection and wastewater.
Researchers on behalf of Murdoch University in Perth have said they are "open," The Guardian reported.
"I think that this is a stress call for all governments and various agencies, such as water treatment and the great tips that manage waste, which work properly in a collaborative way to deal with to this problem, "said Dr. Sam Abraham, professor of veterinary and medical infectious diseases.
Humans could contract the bacteria if they touched gull stools, but the risk is considered low if they wash their hands later.
The study showed that some errors detected in the excreta were resistant to antibiotic medications such as cephalosporin and fluoroquinolone.
One sample showed resistance to carbapenem, which is a last-resort drug that is used for severe and high-risk infections.