New duck disease causing the death of ducks and geese around the Denver subway, according to the CPW

Ducks and geese have recently been reported dead in the Denver metropolitan area, according to Colorado Parks and Wildlife.

Necropsies of several dead geese revealed that the most important factor in their death was a bacterial infection with Riemerella anatipestifer, also known as "new duck disease".

Parks and wildlife in Colorado reported that the disease primarily affects waterfowl, but may be the cause of the disease in poultry and other birds.

All the dead birds examined gave negative results for the bird flu virus and Newcastle disease.

Parks and wildlife in Colorado said large groups of ducks and geese gathered in the Greater Denver area are creating "ideal conditions" for the disease.

If the public observes dead waterfowl, Colorado Parks and Wildlife said it was reported to local park managers for removal. The public should not come into contact with dead or sick ducks or geese. Pets must also be kept away from dead waterfowl.

Questions or concerns can be directed to the Northeast Region Office of Colorado Parks and Wildlife at 303-291-7227.

SUGGESTED VIDEOS | 9NEWS reports