The infection in Cypress County, near Medicine Hat, is the 29th in Alberta but the first in more than a week.
The agency warns that the so-called bird flu is spreading globally and outbreaks have been confirmed in every province except Prince Edward Island.
However, only B.C., Alberta, Saskatchewan, Ontario and Quebec have recorded new cases in May.
Poultry owners are being advised to use strict infection control measures and to take precautions to keep their flocks separate, secure and unable to mix with wild birds, which are believed to be carrying the virus.
A wildlife centre in central Alberta said last week that it was caring for four young foxes that likely picked up avian flu after eating carcasses of birds that died of the illness, and there was concern more scavengers could become ill.
The food inspection agency said no human cases of avian flu have been detected.
This report by The Canadian Press was first published May 24, 2022.
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