Australia is facing an egg supply crunch thanks to bird flu outbreaks — and it’s led McDonald’s to trim breakfast hours by 90 minutes, the company announced.

Australia has been battling outbreaks of the Avian influenza virus in the past few months, which has resulted in about 1 million egg-laying affected hens that have been euthanized to limit the spread of the disease, according to Murray Watt, the country’s minister for agriculture, fisheries and forestry.

Citing “industry…