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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, 623 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 13885 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  
 18/01/2021   316   IdFPARISJardin des Plantes Cyanea
 18/01/2021   084   IdFPARISJardin des Plantes Cyanea
 18/01/2021   134   IdFPARISJardin des Plantes Cyanea
 18/01/2021   309   IdFPARISJardin des Plantes Cyanea
 18/01/2021   335   IdFPARISJardin des Plantes Cyanea
 18/01/2021   046   IdFPARISJardin des Plantes Cyanea
 18/01/2021   084   IdFPARISJardin des Plantes Cyanea
 18/01/2021   070   IdFPARISJardin des Plantes Cyanea
 18/01/2021   142   IdFPARISJardin des Plantes Cyanea
 18/01/2021   141   IdFPARISJardin des Plantes Cyanea
 
Top 10 of the most distant
recoveries from ringing
Top 10 of the highest
longevity since ringing
 
Ring codeDistance  
  000   196.120 km
  160   158.433 km
  095   113.688 km
  035   59.652 km
  061   57.493 km
  088   27.280 km
  173   26.196 km
  239   22.594 km
  163   20.413 km
  026   20.413 km
 
Ring codeLongevity /ringing  
  003   2014 jours
  011   2013 jours
  001   2007 jours
  029   2007 jours
  006   1985 jours
  010   1972 jours
  047   1911 jours
  051   1905 jours
  061   1902 jours
  070   1901 jours

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