Another incident of large numbers of Canada geese dying has been observed in southern Manitoba, this time in an area north of Winnipeg. Approximately 50 deceased geese were spotted on the frozen Red River in Lockport, situated about 15 kilometers north of Winnipeg. This discovery follows the removal of 165 goose carcasses last week from retention ponds in Niverville, approximately 20 kilometers south of Winnipeg. Laboratory tests confirmed that the geese in Niverville died from the highly pathogenic H5N1 strain of the avian influenza virus.
Canadian Wildlife Service biologist Frank Baldwin mentioned in an interview with CBC Manitoba that while they have not yet tested the carcasses in Lockport, they suspect the same disease is responsible for the deaths based on the quantity and distribution of the deceased birds. Avian influenza, also known as bird flu, has evolved over time and the current dominant H5 strain, H5N1, emerged in China in 1996, spreading globally and affecting various bird and mammal species.
Baldwin highlighted the unusual nature of this year’s situation, noting that migratory birds were once carriers of the virus without experiencing significant harm. However, in 2021, wild bird die-offs began to appear, with the first case in wild birds in Manitoba being detected in spring 2022. While the Public Health Agency of Canada considers the H5N1 virus low-risk to humans, precautions should still be taken around dead birds, avoiding direct contact and keeping pets away.
The presence of scavengers picking at dead birds in Lockport raised concerns, as some scavengers have been confirmed to be infected by a form of the H5 virus. Hunters were advised to handle birds in open spaces carefully, practice proper hygiene, and ensure thorough cooking of meat. The widespread circulation of the H5N1 virus among migratory species has led to increased cases across Canada and globally, especially during spring and fall migrations.
Baldwin emphasized the impact of colder weather on bird populations, causing them to concentrate in remaining open water areas, facilitating the rapid spread of the virus. Ducks, considered the main reservoir of the virus, come into close contact with geese during this period, contributing to the peak in mortality rates. The provincial spokesperson disclosed that 726 dead birds were tested in Manitoba this year, with 54 testing positive for H5N1.
Despite the annual occurrence of bird flu, the significant number of dead birds in concentrated areas like Niverville and Lockport remains a rare occurrence. Baldwin expressed concern over the unprecedented situation, indicating a potential increase in impacts on Canada geese compared to previous years. Anyone encountering sick or deceased birds was encouraged to report them to the provincial TIP line for further action.
