Population Pie Charts: Compare Winters

Monarch Butterflies

Population: Compare Winters

What do the graphs reveal about the sanctuaries monarchs select from year to year? Why is it valuable to have information from more than one year? What predictions could you make about the future based on these graphs?

Total Population: 303 Million
Based on an estimate of 50 million monarchs per hectare.

Total Population: 124 Million
Based on an estimate of 50 million monarchs per hectare.

Total Population: 145 Million
Based on an estimate of 50 million monarchs per hectare.

Total Population: 201 Million
Based on an estimate of 50 million monarchs per hectare.

Total Population: 57 Million
Based on an estimate of 50 million monarchs per hectare.

Total Population: 34 Million
Based on an estimate of 50 million monarchs per hectare.

Total Population: 60 Million
Based on an estimate of 50 million monarchs per hectare.

Total Population: 145 Million
Based on an estimate of 50 million monarchs per hectare.

Total Population: 201 Million
Based on an estimate of 50 million monarchs per hectare.

Total Population: 96 Million
Based on an estimate of 50 million monarchs per hectare.

Total Population: 253 Million
Based on an estimate of 50 million monarchs per hectare.

Total Population: 231 Million
Based on an estimate of 50 million monarchs per hectare.

Total Population: 334 Million
Based on an estimate of 50 million monarchs per hectare.