Every year hundreds of millions of birds migrate to and from their wintering and breeding grounds, often traveling hundreds, if not thousands of kilometers twice a year. Many of these individuals make concentrated movements under the cover of darkness, and often at high altitudes, making it exceedingly difficult to precisely monitor the passage of these animals. Organized the Bird Migration Visualization Challenge and Hackathon. Study served by the CartoDB.

Surprise! Et pour ça, je la remercie.

Retape dans le champ ci-dessous la suite de chiffres et de lettres qui apparaissent dans le cadre ci-contre.

Nous sommes allés au pays. Nous avons perdu notre chemin. Un avion fait un looping. Les castors sont trop mignons.