Finished! Looks like this project is out of data at the moment!
Remember to: Mark the keypoints you can see only on the one giraffe in the center of the image facing right, Use hashtags for hidden keypoints, and Have Fun!
We added a chart of heights by age in Results.
You will be clicking on four keypoints on giraffe pictures so we can make measurements of neck length, ossicone (horn) length, and total height.
Zooniverse Talk
Chat with the research team and other volunteers!
Measuring Giraffes Statistics
View more statsKeep track of the progress you and your fellow volunteers have made on this project.
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By the numbers
Message from the researcher
The measurements you help us to make are critical to giraffe conservation science and policy. Plus, the babies are super cute!
DerekEdwardLeeAbout Measuring Giraffes
Masai Giraffes are endangered from illegal killing and habitat loss. As part of the world's largest giraffe conservation science project, we have identified thousands of individual Masai giraffes in Tanzania by their unique and unchanging coat patterns.
We need your help to measure giraffes from photographs, so we can track their heights and sizes over time. These data will answer questions about giraffe population biology including age distributions, calf growth rates, and maximum height of wild giraffes in different places.
We will be measuring giraffes in 40,000 images. Your keypoints will be combined with the keypoints others mark on the same images, and crowdsourced measurements of giraffes will emerge. This means that it doesn’t matter if you sometimes make mistakes!
We are able to measure giraffes in photos because we record the distance from the camera to each animal we photograph using a laser rangefinder. That distance info, plus focal length of the lens (recorded in the EXIF data for the photo), goes into a function that converts number of pixels between two marked points in the photo into centimeters. Viola, measurements from photos thanks to your marked keypoints!
You can discuss the project with other volunteers, and the researchers, on the talk page.