The Federal Court of Appeal ruled on Thursday that a cull of about 400 ostriches can proceed at a British Columbia ostrich farm that suffered an avian flu outbreak.

Here are five things to know about the situation at Universal Ostrich Farms in Edgewood, B.C.

1. What did the court decide?

The appeal court upheld earlier rulings that denied judicial review for decisions by the Canadian Food Inspection Agency that the ostrich flock should be killed and that there were no grounds for an exemption. It also denied a bid to introduce new evidence in which the farm owners swear to the flock's current health.

2. Why do the farmers say the flock should be spared?

The farmers say the flock has recovered since the H5N1 flu outbreak that killed 69 birds in December and January, and the survivors a

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