Number of dead corvid reports and percent of total corvid reports, early versus later years.

The last column is the overall percent decrease in reports; shaded species decreased proportionally while unshaded species increased proportionally.最后一列代表报告的整体降幅百分比；带阴影标识的物种（shaded species）呈比例下降，无阴影标识的物种（unshaded species）则呈比例上升。