Each of the 10,500 turkeys will be separated at a ranch in North Yorkshire after fowl influenza was affirmed at the site.
The H5N8 strain of avian flu was found at a turkey swelling premises close to Northallerton on Saturday.
The flying creatures will be others consciously winnowed to stop the infection spreading, the Department for Rural Affairs (Defra) stated, as it examines the source.
Danger to general wellbeing from the infection is exceptionally low, Public Health England (PHE) added.
An impermanent control zone is presently set up – a 3km (1.9m) security zone promptly around the area of the episode and a 10km (6.2m) reconnaissance zone around that.
More Yorkshire stories
Defra’s central veterinary official, Christine Middlemiss, stated: “We are direly searching for any proof of illness spread related with this homestead to control and kill it.
“Winged animal managers ought to stay alert for any indications of sickness, report speculated illness promptly and guarantee they are keeping up acceptable biosecurity on their premises.”
- The infection can spread to poultry and other hostage winged animals when wild flying creatures relocate from territory Europe during winter, Defra added.
- Routine wellbeing exhortation is being offered to those chipping away at the homestead.
Dr Gavin Dabrera, specialist in Acute Respiratory Infections at PHE, said the World Health Organization has never affirmed any instances of H5N8 in people to date.
The Food Standards Agency said appropriately cooked poultry and poultry items, including eggs, stay protected to eat.