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RSHA Trends over Time

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This graph shows the Red-shouldered Hawk count trend over time. Questions we could ask with these data include: What is the trendline for changes in annual numbers of Redshouldered Hawk sightings at the Golden Gate over the last 30 years? Are Redshoulders increasing or decreasing? The dark swath behind the trendline shows 95% of the data surrounding the mean—was this a narrow trend, or a broad trend with much variability?

Elizabeth Edson, the Parks Conservancy's Data Manager, analyzed the data and created this graph. 

A graph showing a blue line that represents total Red-shouldered Hawk counts for each year and a white trendline in the background that slopes slightly up from left to right.