Avian influenza virus — or bird flu — can infect domestic poultry such as chickens and turkeys, as well as wild birds. The H5N1 strain has been identified in Canada.
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These coordinated movements of a flock of starlings follow no plan or leader. Scientists used to think the animals must communicate via ESP to create these fast-moving blobs.
Geese honk loudly and point their bills toward the sky when they’re ready to start the migration. Here’s how they know it’s time, how they navigate and how they conserve energy on the grueling trip.
