Blood-equivalent total mercury concentrations in birds
![Map of North America shows dots where birds have been found, with varying levels of mercury in their blood.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/BirdsFigure-2.jpg?itok=bPplq3gH)
Detailed Description
Blood-equivalent total mercury (THg) concentrations in birds across western North America using original data (n=27,629 individual samples). All individual data points are shown, with lower THg concentrations in the background as larger symbols and higher THg concentrations as smaller symbols on top.
Sources/Usage
Public Domain.