An evasive manoeuvre gone wrong may be to blame for the mysterious death of dozens of birds in Delta earlier this month. European starlings can form very large flocks and execute amazing swooping and whirling patterns—called a murmuration—to avoid a predatory bird, said the statement. About 200 birds collided with the pavement and 42 birds died on impact. Most of the birds that died were juveniles and suffered acute trauma from compressive chest injuries. 's Ministry of Agriculture found none of the birds suffered from infectious disease or intoxication.

Source: CBC News September 26, 2018 19:52 UTC