Mosquitoes are the bane of chickens and poultry keepers alike. These biting creatures can infect chickens with the Avian Pox virus, spreading the virus from an infected bird to an uninfected bird. Transmission occurs when the mosquito feeds on an infected bird that has the virus circulating in its blood or when a mosquito feeds on secretions from a pox lesion and then feeds on an uninfected bird. The virus can also be transmitted to other chickens in the flock indirectly through an infected bird’s feather debris, skin dander, fallen dried scabs, scab secretions and blood.