The highly contagious and deadly H7N8 strain of bird flu has been detected at a second farm in the Hawkesbury region, NSW's health minister says.

Avian influenza has been found at a second egg farm in the Hawkesbury district.

Avian influenza has been found at a second egg farm in the Hawkesbury district.

Avian influenza has been found at a second egg farm in the Hawkesbury district.

The highly contagious and deadly strain of avian flu was detected near the first site, with authorities now required to euthanise an estimated 87,000...

Some 240,000 birds will be destroyed on a NSW egg farm to tackle the spread of bird flu in two states.

Bird flu has been detected at a commercial egg farm in Sydney.

A commercial farm in NSW is under lockdown after bird flu was found in chickens, although the strain is different to the outbreak impacting Victoria.

A commercial farm in NSW is under lockdown after bird flu was found in chickens, although the strain is different to the outbreak impacting Victoria.

A commercial farm in NSW is under lockdown after bird flu was found in chickens, although the strain is different to the outbreak impacting Victoria.