The birds, exposed to the avian flu, were killed after Canada’s Supreme Court refused to hear an appeal and a rescue effort by Robert F. Kennedy Jr. fell short.

© The Canadian Press, via Associated Press

An automaker’s decision to shift Canadian jobs to the United States has left workers in Brampton, Ontario, feeling betrayed and angry.

© Ian Willms for The New York Times

One province with an outsize number of cases has seen a collision of politics and public health policy.

© Nasuna Stuart-Ulin for The New York Times

The government has barred Marineland from shipping its whales to an aquarium in China so the park is threatening to put the whales down.