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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.
In 2024, more than 1500 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 39539 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  
 09/10/2025   416   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   417   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   230   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   500   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   501   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   502   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   503   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   504   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   505   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   506   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   507   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   508   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   509   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   510   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   511   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   512   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   513   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   514   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   516   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   517   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   515   ParisPARISJardin écologique Frédéric JIGUET
 09/10/2025   388   ParisPARISBoulevard Saint-Germain Moose
 09/10/2025   235   ParisPARISJardin des Plantes Marie-Lan Taÿ Pamart
 09/10/2025   385   ParisPARISJardin des Plantes Marie-Lan Taÿ Pamart
 09/10/2025   715   ParisPARISJardin des Plantes Marie-Lan Taÿ Pamart
 09/10/2025   656   ParisPARISJardin des Plantes Marie-Lan Taÿ Pamart
 09/10/2025   249   ParisPARISJardin des Plantes Marie-Lan Taÿ Pamart
 09/10/2025   283   ParisPARISJardin des Plantes Marie-Lan Taÿ Pamart
 09/10/2025   716   ParisPARISJardin des Plantes Marie-Lan Taÿ Pamart
 09/10/2025   385   ParisPARISJardin des Plantes Marie-Lan Taÿ Pamart
 09/10/2025   497   ParisPARISJardin des Plantes Marie-Lan Taÿ Pamart
 09/10/2025   305   ParisPARISJardin des Plantes Marie-Lan Taÿ Pamart
 09/10/2025   230   ParisPARISJardin des Plantes Marie-Lan Taÿ Pamart
 09/10/2025   094   ParisPARISJardin des Plantes Marie-Lan Taÿ Pamart
 09/10/2025   856   ParisPARISJardin des Plantes Marie-Lan Taÿ Pamart
 09/10/2025   128   ParisPARISJardin des Plantes Marie-Lan Taÿ Pamart
 09/10/2025   687   ParisPARISCimetière du père-lachaise Julie p.
 09/10/2025   144   ParisPARISPrès de Cimetière du Père Lachaise CARDOT Frédéric
 09/10/2025   407   IdF PARIS Jardin des Plantes Cyanea
 
Top 10 of the most distant
recoveries from ringing
Top 10 of the highest
longevity since ringing
 
Ring codeDistance  
  096   625.625 km
  469   333.628 km
  006   284.871 km
  013   263.734 km
  547   244.899 km
  095   214.178 km
  130   196.161 km
  160   158.433 km
  573   145.596 km
  829   121.490 km
 
Ring codeLongevity /ringing  
  003   3743 jours
  006   3730 jours
  001   3722 jours
  011   3646 jours
  070   3596 jours
  039   3507 jours
  018   3488 jours
  077   3341 jours
  047   3132 jours
  036   3065 jours

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