California's Proposition 12, an animal welfare law, is being targeted by the Trump administration in a bid to reduce egg prices.

Mass culling is expensive, but alternatives, like vaccinating chickens or luring wild birds away from domestic flocks, would also impose logistical and environmental costs. And they may be more expensive,

More than 112,000 birds have been culled in Northern Ireland due to avian flu in just over two weeks. All poultry in Northern Ireland, from commercial to backyard and hobby flocks, are currently under a housing order meaning they must be kept indoors or otherwise separate from wild birds,