Cause of death of kestrels

In a bar chart, it is easier to compare the proportions in individual categories.

In a pie chart, it is easier to assess the combined proportion in adjacent categories. This is most useful when the categories are ordered or can be meaningfully grouped in some way.

Click on individual categories (on either the pie or bar chart) to read their proportions. Drag over adjacent categories to read the combined proportion.

The bar chart shows...
Proportion who died from road accidents was slightly lower than the proportion who died from other traumas.
The pie chart shows...
About half of the kestrels died from 'natural' causes

The data set shows the causes of death of kestrels (a bird of prey) in Britain between 1963 and 1997. (Carcasses were sent to the researchers in response to advertisements in bird-watching magazines and journals and the cause of death was found from information sent by the finder and examination of the carcass.)