Two dead black-headed gulls found in Tuen Mun and on Lantau Island have tested positive for the H5 avian influenza virus in preliminary checks.
The Agriculture, Fisheries & Conservation Department is conducting confirmatory tests.
The first bird was collected at the EcoPark in Tuen Mun on December 30, while the second was found in a drain near Sha Lo Wan Soccer Pitch on Lantau, on January 1.
The bird is a common winter visitor to Hong Kong.
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