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To better understand how to face to the recurring nuisances caused by the numerous crows in Paris, a study was set up by the National Museum of Natural History at the request of the city's environmental services since July 2015.

It's about capturing and tagging crows, to study their movements and survival.
At the beginning of 2022, more than 900 crows have been captured in Paris and fitted with colour rings with a 3-digit code which allows them to be identified when they are relocated. Each year, the general public and ornithologists communicate to the museum 22466 relocations of ringed individuals, especially in Paris and the close suburbs, but also at longer distances.

This website was created to allow observers to report their observations of colour-ringed crows, and to provide access to the history of each ringed bird. You can thus consult the different observations of a bird, by visualizing its places of observation on a map.

Good observations, beautiful explorations and good crows!

The observations of ringed crows of the day 
 
 DateRing codeDepartmentLocalityRoad/SiteObservers  
 28/09/2022   433   Département de ParisPARISRue des Fossés Saint-Bernard Hervé Perrin
 28/09/2022   515   Département de ParisPARISRue des Fossés Saint-Bernard Hervé Perrin
 28/09/2022   510   Département de ParisPARISRue des Fossés Saint-Bernard Hervé Perrin
 28/09/2022   444   Département de ParisPARISRue des Fossés Saint-Bernard Hervé Perrin
 28/09/2022   521   Département de ParisPARISRue des Fossés Saint-Bernard Hervé Perrin
 28/09/2022   067   Département de ParisPARISRue des Fossés Saint-Bernard Hervé Perrin
 28/09/2022   058   Département de ParisPARISRue des Fossés Saint-Bernard Hervé Perrin
 
Top 10 of the most distant
recoveries from ringing
Top 10 of the highest
longevity since ringing
 
Ring codeDistance  
  469   333.628 km
  013   263.734 km
  130   196.161 km
  160   158.433 km
  095   113.688 km
  133   110.626 km
  035   59.652 km
  061   57.493 km
  303   32.523 km
  088   27.280 km
 
Ring codeLongevity /ringing  
  003   2629 jours
  001   2626 jours
  011   2618 jours
  006   2599 jours
  070   2502 jours
  015   2416 jours
  082   2370 jours
  039   2357 jours
  038   2355 jours
  099   2332 jours

  Sources © Arnaud LH - contact site - contact Programme - Crédits photographiques : Marie-Lan Taÿ-Pamart, Yves Gestraud, Frédéric Jiguet