This is a very cool animation showing the locations of the Beijing Swifts fitted with loggers during 2014-2015. Each coloured dot is an individual Swift from the Summer Palace. The gaps in coverage are due to “noisy” data during the spring and autumn equinoxes. Credit to Lyndon Kearsley.

The moving dots realy become alive. Wonderfull, astonishing and amazing. More than an animation, this is art !
Edward, Netherlands
Thank you, Edward! Lyndon has created a wonderful way to visualise the Swift’s long-distance migration… Huge credit to him!
This animation is really amazing! I’ve enjoyed watching it a few times. And even more amazing is these Swift’s migration. What a distance! Really good information. Love that the dates are included. Thanks for sharing this.
Thanks Jason! I am in awe that these birds, small enough to fit in the palm of our hands, travel so far. Even more astonishing is that they do it without landing! Nature is AMAZING!