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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.
After five, 756 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 17169 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 latest 10 observations of ringed crows 
 DateRing codeDepartmentLocalityRoad/SiteObservers  
 25/09/2021   436   Département de ParisPARISPort de la Tournelle Patrick Decory
 24/09/2021   479   Département de ParisPARISJardin des Plantes Yves Gestraud
 23/09/2021   138   Val-de-MarneSAINT-MANDÉAvenue Sainte-Marie Lequitte-Charransol Perrine
 23/09/2021   376   Hauts de Seine Malakoff18 avenue pierre Larousse Sophie courant
 22/09/2021   138   Val-de-MarneSAINT-MANDÉAvenue Sainte-Marie Lequitte-Charransol Perrine
 22/09/2021   310   Ile de FranceParisParc de la Villette Constance RYDER
 22/09/2021   143   ParisPARISJardin du luxembourg Poub pelle
 22/09/2021   185   Département de ParisPARISUnnamed Road Bigonneau Rémi
 22/09/2021   141   Département de ParisPARISUnnamed Road Bigonneau Rémi
 22/09/2021   311   Département de ParisPARISRue Cuvier Bigonneau Rémi
Top 10 of the most distant
recoveries from ringing
Top 10 of the highest
longevity since ringing
Ring codeDistance  
  013   263.734 km
  000   196.152 km
  160   158.433 km
  095   113.688 km
  035   59.652 km
  061   57.493 km
  303   32.523 km
  088   27.280 km
  173   26.196 km
  239   22.594 km
Ring codeLongevity /ringing  
  006   2266 jours
  001   2265 jours
  003   2264 jours
  011   2197 jours
  039   2167 jours
  061   2146 jours
  010   2143 jours
  070   2143 jours
  008   2096 jours
  029   2087 jours

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