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Abstract
Continuous exposure of birds to very low intensity microwave radiation was investigated from the point of view of health and external appearance. Subjects were two colonies of 56 domestic fowl (white leghorns) from the same brood and at the beginning of their second laying period. Above one colony was a 4-ft. diameter parabolic dish coupled to a 7.06 GHz CW microwave transmitter. Field intensity in each cage (without birds) ranged from 0.19 μW/cm2 in the outer cages to 360 μW/cm2 in the cages roximal to the line of sight of the dish. Daily account was kept of the number and weight of eggs produced per cage and of the environmental parameters for a period of 248 days. Egg production of the irradiated colony was greater (13.7%) than that of the control colony but was accompanied by double the mortality rate. Postmortem histological examinations revealed two major groups of diseases. The irradiated birds that survived showed a profound deterioration in health.