Recent bird flu outbreaks in Europe have brought up questions about the role of friendly wild birds on free-range farms. These birds and the broader environment and the fowl have been scrutinized.

    To figure things out

    a group studied a duck farm in the southwest of France from 2019 to 2021. They tracked down flocks of these commonly colorful wild birds.  Collected samples of blood, swabs, and poop from these wild creatures. They also inspected domestic ducks and took samples of the environment. Methods varied, they used testing methods like q(RT-)PCR and ELISA to find out if any four pathogens were present. They focused on the presence of viruses like Avulaviruses, avain influenza. and coronaviruses as well  as bacteria like chlamydia among the birds.

    As a result, they found that wild birds didn't have a high level of these harmful viruses. The result came with a surprise. The study did not find any coronaviruses at all in either. Only a small percentage, in the case of three percent and less had avian influenza and chlamydia. Wild birds' immunity against avian influenza and Newcastle disease virus (NDV) was also tested. The low percentages suggest they are just passing through on these ducks farms.  In a result similar to how humans are generally more susceptible to coronavirus than the chickens they are commonly used for virus testing.

    The number of birds with antibodies to these diseases were low. Results did not change much over time, and wild birds didn't seem to cause things in domestic duck flocks.

    The study suggests that wild birds do not significantly spread bird flu or its associated pathogens to domesticated ducks on farms.  The role of these free- roaming wild birds is low compared to the ducks in the transmission of dangerous diseases to the environment.

The Quiet Tail: When Ducks and Wild Birds Meet Farmers

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